Document:

<PAGE>   1
                                                                    EXHIBIT 10.2

                             PARTICIPATION AGREEMENT

         This Agreement made by and between Mendell Energy Technologies, Inc.
("MTI") (MTI is hereinafter sometimes referred to as "Owner")

                                       AND

Stealth Oil & Gas, Inc. ("Stealth") (hereinafter sometimes referred to as
"Participant"), and shall be effective as of the 1st day of June, 2001.

                     Article 1. Leasehold Interests of Owner

         1.1. Owner represents that it owns of record an interest in the
leasehold and working interest created and existing by virtue of the leases
(hereinafter referred to as "Contract Premises") described on Exhibit "A",
attached hereto and made a part hereof, equal to the Ownership Percentages set
forth in Article 3, below.

         1.2. Owner represents that the leases are subject to lessor's base
lease royalty and other leasehold obligations provided for in the leases (the
"Existing Burdens").

         1.3 Owner represents that the leases are subject to the Existing
Burdens, but free of any additional burdens created by, or reserved unto Owner.

         1.4 Owner represents that none of the leases have less than an 80% net
revenue interest.

         1.5. Owner agrees to obtain any consents necessary to assign a portion
of its interest in the leases to Participant.

                              Article 2. Assignment

         For and in consideration of Participant agreeing to pay up to $45,500
per well ($136,500 for all three wells) to drill, complete and equip for
production (or plug and abandon) three initial wells (the "Initial Wells") at
mutually agreed locations within the Contract Premises, Owner agrees to assign
to Participant, solely out of Owner's interest, an undivided interest in the
leases equal to Participant's Ownership Percentage (set forth below) subject to
the Existing Burdens on the form attached hereto as Exhibit "D". Participant
shall not be responsible for any other costs incurred in drilling, completing
and equipping the Initial Wells. Participant and Owner may mutually agree not to
drill the third well, in which case Participant shall not be required to pay its
share of the cost of drilling such well, and the first two wells shall be the
"Initial Wells".

                        Article 3. Ownership Percentages

         3.1. As used in this Agreement the respective Ownership Percentages of
the parties shall be as follows:

                                      -1-
<PAGE>   2

<Table>
<Caption>
                                       AMI #1                 AMI #2
                                       ------                 ------
<S>                                 <C>                       <C>
         Stealth                    18.75% all depths         18.75% all depths

         MTI                        31.25% all depths         47.92% from the surface to the base
                                                                         of the Montana Group
                                                              14.58% below the base of the
                                                                         Montana Group

(Griffon Petroleum, Inc.)
         GPI                        50% all depths            33.33% from the surface to the base
                                                                         of the Montana Group
                                                              66.67% below the base of the
                                                                         Montana Group
</Table>

                            Article 4. Initial Wells

         4.1. The Participant agrees to join Owner in the drilling of the
Initial Wells at mutually agreed locations within the Contract Premises. Subject
to Article 2, MTI shall be responsible for 100% of the costs to drill, complete
and equip the two initial test wells for production.

         4.2 MTI shall act as Operator for the Initial Wells. An AFE covering
each of the two wells is attached hereto as Exhibit "B" and made a part hereof.
MTI shall use Weatherford U.S., L.P. to provide management and equipment for the
"underbalanced" portion of such wells. In addition, MTI shall use Weatherford
U.S., L.P. or one of its affiliates to provide services and equipment for all
wells drilled on the Contract Premises, provided such equipment and services are
available at competitive rates.

         4.3. In consideration of Participant's agreement to comply with its
obligation to pay for the cost of the Initial Wells as set forth in Article 2,
above, (i) Owner shall, upon request, deliver to Participant, without warranty
of title, either express or implied, and subject to the reservations,
limitations and conditions hereinafter set forth, an assignment of an undivided
eighteen and seventy-five one hundredths percent (18.75%) of the rights, title
and interest in and to the Contract Premises, subject to the limitations, if
any, set forth in Exhibit "A", and (ii) Owner shall be deemed to have
relinquished to Participant one hundred percent (100%) of Owner's operating
rights and working interest in the production from such well(s), subject to the
payout provisions of paragraph 4.4 below.

         4.4 Upon payout of an Initial Well(s), the operating rights and working
interest in production from such well(s) shall be owned by the parties in
accordance with the Ownership Percentages set forth in Article 3, above. As used
herein, "payout" is defined as that time when Participant has recovered out of
Owner's share of production

                                      -2-
<PAGE>   3

from any well earning an assignment hereunder (after first deducting (1)
presently effective base lease royalties, overriding royalty interest(s),
production payments and like interest in said production, if any, created by
Owner or its predecessors in title and of record as of the date hereof; (2) the
overriding royalty which is retained by Owner hereunder, and (3) the
proportionate part of ad valorem, production, excise, "windfall profits" and/or
severance taxes applicable thereto) the sum of money equal to 100% of
Participant's costs, as full recoupment, of drilling, completing and equipping
said well and operating said well during such period of recovery. At such time,
Operator shall notify Participant accordingly. Such recovery and the period of
time in which it is accomplished may sometimes be referred to herein as "Payout"
and "Payout Period" respectively.

         4.5 In any assignment or relinquishment of interest to Participant
pursuant hereto, Owner shall reserve and retain an overriding royalty interest
in all oil, gas and other minerals produced, saved and sold from the well
earning an assignment hereunder attributable to the Contract Premises equal to
the difference between twenty percent (20%) of 8/8ths and the base lease
royalties, overriding royalty interest(s) and other like burdens created by
Owner or their predecessors in title and of record as of the date hereof. Such
overriding royalties ("ORRI") shall be in addition to presently effective
royalties, overriding royalties and production payments, if any, subject to the
proportionate reduction clause hereinafter provided for, and said ORRI shall be
free and clear of all costs except ad valorem, production and severance taxes
assessed thereon.

         4.6 In the event the leasehold interest owned by Owner (that is, the
operating rights owned by Owner in the Contract Premises without regard to any
existing overriding royalties, production payments, or other interest in the
production or revenue) in the Contract Premises is less than a full leasehold
interest, then the overriding royalty retained by Owner hereunder including all
obligations appurtenant thereto, shall be proportionately reduced.

         4.7 After the Initial Wells are completed or plugged and abandoned, all
subsequent operations proposed on the Contract Premises and any other leases
covering lands within the Area of Mutual Interest set forth in Article 10
herein, including, without limitation, a completion attempt on the Initial
Wells, will be proposed and governed by the terms and provisions of the
operating Agreement attached hereto as Exhibit "C" (the "Operating Agreement"),
and the cost thereof will be borne by the parties hereto in proportion to their
respective Ownership Percentages.

                            Article 5. Force Majeure

         In the event that any party to this Agreement is prevented from
conducting any of the operations contemplated hereunder by reason of lack of
market, water, equipment, labor or other materials, or by reason of fire, storm,
flood, explosion, act of God, or rebellion, insurrection or riot, or by reason
of differences with workmen or labor disputes, including strikes and lockouts,
or by reason of failure of carriers to transport or to furnish facilities for
transportation, or by reason of any federal or state law, or any order, rule, or

                                      -3-
<PAGE>   4

regulation of governmental authority, or by reason of lack of drilling permits,
weather conditions, or inability to secure a drilling rig or the necessary pipe
to drill any wells (so long as such party diligently continues to make efforts
to secure a rig or pipe), or by reason of any other cause or causes beyond such
party's control, or any operation of Force Majeure, then, while so prevented,
the period provided for herein for performance of such operation shall be
extended while and so long as such party is prevented from performing such
operations. The settlement of labor disputes, including strikes and lockouts,
shall be entirely within the discretion of the party having the difficulty.

                   Article 6. Operations: Operating Agreement

         6.1. MTI and Participant hereby designate MTI as Operator for all
operations under this Agreement on the Contract Premises and all leasehold
interests acquired under the Area of Mutual Interest provisions set forth in
Article 10 herein.

         6.2. At the time of execution of this Agreement by all parties, the
Contract Premises shall be subject to and operated in accordance with the
provisions of the Operating Agreement that shall be executed concurrently with
this Agreement. The terms and provisions of the Operating Agreement and the
Exhibits attached thereto are hereby incorporated herein and made a part hereof.
Should the terms and provisions of the Operating Agreement be in conflict with
the provisions of this Agreement, then, as between the parties hereto, the terms
of this Agreement shall prevail unless otherwise provided herein.

                            Article 7. Assignability

         This Agreement may not be assigned in whole or in part by any party
hereto without the mutual consent of all parties hereto, which consent shall not
be unreasonably withheld. Any assignment by a party hereto of its rights under
this Agreement shall be made subject to the terms of this Agreement, and
notwithstanding any such assignment, each party to this Agreement shall remain
primarily liable for all obligations assumed hereunder, including, but not
limited to, financial obligations.

                     Article 8. Relationship of the Parties

         The respective obligations and liabilities of the parties hereto shall
be several, not joint or collective, and except as otherwise provided herein or
in the Operating Agreement, each party shall be responsible only for its own
obligations. It is not the purpose or intention of this Agreement to create, and
this Agreement should never be construed as creating, a joint venture, agency,
mining partnership, or other relationship whereby any of the parties shall be
liable for acts, either of commission or omission, of any other party hereto.

                                      -4-
<PAGE>   5

                       Article 9. Information and Reports

         9.1 During the course of the drilling of the Initial Wells, Operator
shall furnish to Participant copies of daily drilling reports showing the
formations penetrated and the depths thereof.

         9.2 Owner shall furnish or cause to be furnished to Participant copies
of any and all electrical logs run in the Initial Wells, together with any core
and test data.

         9.3 All reports, logs, samples and other things required or requested
to be furnished by Operator under the terms of this Agreement shall be furnished
at the addresses set out below.

         9.4 All notices, reports, and information to be furnished hereunder
shall be delivered to the parties at the addresses shown below:

         If to MTI:

         Mendell Energy Technology, Inc.
         402 Orofino Drive
         Castle Rock,  Colorado 80104
         Attn:  Paul E. Mendell

         If to Participant:

         Stealth Oil and Gas, Inc.
         515 Post Oak Boulevard
         Suite 600
         Houston, Texas 77027

                      Article 10. Areas of Mutual Interest

         For a period of five (5) years from the effective date of this
Agreement, if any party hereto acquires an interest in, or the right to acquire
an interest in the Areas of Mutual Interest described in Exhibit "E", the party
acquiring such interest shall offer in writing to assign to the other party
hereto an undivided interest in the acquired interest in accordance with the
Area of Mutual Interest provision set forth in the Operating Agreement attached
hereto as Exhibit "C".

                            Article 11. Choice of Law

         11.1. THIS AGREEMENT, TO THE EXTENT PERMISSIBLE UNDER APPLICABLE CHOICE
OF LAW PRINCIPLES, SHALL BE GOVERNED BY AND CONSTRUED ON ACCORDANCE WITH THE
LAWS OF THE STATE OF MONTANA.

                                      -5-
<PAGE>   6

         11.2. This Agreement is made subject to all valid, applicable federal,
state, and local laws, rules, orders, and regulations of any duly constituted
federal, state, or local regulatory body or authority having jurisdiction
thereof, and all operations hereunder shall be conducted in conformity
therewith.

                              Article 12. Exhibits

         The following exhibits attached hereto, are incorporated herein by
reference:

         1.       Exhibit "A" is the list of Lease

         2.       Exhibit "B" is the AFE for the Initial Wells

         3.       Exhibit "C" is the Operating Agreement

         4.       Exhibit "D" is the form of assignment

         5.       Exhibit "E" is the Areas of Mutual Interest

                        Article 13. Counterpart Execution

         This Agreement may be executed in any number of counterparts and each
counterpart so executed shall have the same force and effect as an original
instrument and as if all of the parties to the aggregate counterparts had signed
the same instrument, provided that this Agreement shall not be effective until
executed by all parties hereto.

         IN WITNESS WHEREOF, this instrument is executed effective as of the 1st
day of June, 2001.

                                        Mendell Energy Technologies, Inc.

                                        By:
                                             -----------------------------------
                                             Name:
                                                  ------------------------------
                                             Title:
                                                   -----------------------------

                                        Stealth Oil & Gas, Inc.

                                        By:
                                             -----------------------------------
                                             Name:
                                                  ------------------------------
                                             Title:
                                                   -----------------------------

                                      -6-
<PAGE>   7

                            Participation Agreement
                                    Exhibit A
                                     Leases

Any interest in an oil, gas and mineral lease covering lands located within the
Areas of Mutual Interest described in Exhibit E, (i) and owned by MTI as of June
1, 2001 or (ii) in which MTI has the right to, and does, acquire an ownership
interest by virtue of certain letter agreements with Griffon Petroleum, Inc.
(GPI), provided that GPI's interest in such lease(s) was acquired on or before
June 1, 2001.

                                      -7-
<PAGE>   8

                             Participation Agreement
                                    Exhibit E
                            Areas of Mutual Interest

AMI I:        Townships 32, 33, and 34, Range 11 East, all in Hill County,
              Montana.

AMI II:       Townships 32, 33, 34, 35, 36, and 37 North, Ranges 8, 9, and 10
              East; and Townships 35, 36 and 37 Range 11 East, all in Hill
              County, Montana.

                                      -8-<PAGE>   1

                                                                    EXHIBIT 10.2

                                 LEASE AGREEMENT

                                     between

                       PONTE VEDRA MANAGEMENT GROUP, LTD.
                          a Florida limited partnership

                                       and

                      Orthodontic Centers of America, Inc.
                             a Delaware corporation

                              Dated October 7, 1999

<PAGE>   2

                                SUMMARY OF LEASE

THIS DOCUMENT IS MERELY A SUMMARY AND ANY PROVISIONS OF THE LEASE AND OTHER
AGREEMENTS BETWEEN LANDLORD AND TENANT SHALL PREVAIL OVER CONFLICTING PROVISIONS
CONTAINED HEREIN.

(A)   LANDLORD'S MAILING ADDRESS:   5000 Sawgrass Village Circle, Suite 28
                                    Ponte Vedra Beach, Florida 32082

(B)   TENANT'S NAME:                Orthodontic Centers of America, Inc.

      MAILING ADDRESS:              5000 Sawgrass Village Circle, Suite 30
                                    Ponte Vedra Beach, Florida 32082

(C)   PREMISES:                     approximately 16,027+ rentable square feet
                                    within Los Verdes at Ponte Vedra formerly
                                    known as The Meridian Building 5000 Sawgrass
                                    Village Circle, Suite 30 Ponte Vedra Beach,
                                    Florida 32082

                                    Known as Suite No. 30

(D)   TERM:                         One Hundred Twenty (120) months

(E)   COMMENCEMENT DATE:            The earlier of May 25, 2000 or thirty (30)
                                    days after Landlord notifies Tenant that the
                                    Premises are ready for occupancy

(F)   EXPIRATION DATE:              The last date of the Lease Term unless
                                    sooner terminated or extended in accordance
                                    with the terms hereof

(G)   FIRST YEAR BASE RENT:         $21.90 per rentable square foot, $29,249.28
                                    per calendar month.

(H)   SECURITY/DAMAGE DEPOSIT:      None

(I)   PERMITTED USE:                Office use

(J)   EXHIBITS:                     The following exhibits attached to this
                                    Lease are hereby incorporated herein and
                                    made a part hereof

                                    EXHIBIT "A" - Premises
                                    EXHIBIT "B" - Estoppel Certificate
                                    EXHIBIT "C" - Rules and Regulations
                                    EXHIBIT "D" - Approved Floor Plan
                                    EXHIBIT "E" - Tenant Improvement
                                                  Specifications

Please make all checks payable to: PONTE VEDRA MANAGEMENT GROUP, LTD. and
mail/deliver to 5000 Sawgrass Village Circle, Suite 28, Ponte Vedra Beach,
Florida 32082.

PLEASE INCLUDE PONTE VEDRA MANAGEMENT GROUP, LTD. AS AN ADDITIONAL INSURED ON
ALL INSURANCE POLICIES.

<PAGE>   3

                                 LEASE AGREEMENT

THIS LEASE AGREEMENT (hereinafter referred to as the "Lease") is made and
entered into the 7th day of October 1999, by and between PONTE VEDRA MANAGEMENT
GROUP, LTD., a Florida limited partnership (hereinafter referred to as
"Landlord") and ORTHODONTIC CENTERS OF AMERICA, INC., a Delaware corporation
(hereinafter referred to as "Tenant").

                                   WITNESSETH:

THAT LANDLORD, in consideration of the rents and agreements hereafter promised
and agreed by Tenant to be paid and performed, does hereby lease to Tenant, and
Tenant does hereby lease from Landlord, the Premises described herein, subject
to the following terms.

ARTICLE 1: DESCRIPTION OF PROPERTY; TERM

SECTION 1.1. DESCRIPTION OF PROPERTY. Landlord hereby leases to Tenant and
Tenant hereby leases from Landlord that certain space located on the 3rd floor
in the Building known as Los Verde at Ponte Vedra formerly known as The Meridian
Building located at 5000 Sawgrass Village Circle, Ponte Vedra Beach, Florida
(the "Building") and designated as Suite 300 (the "Premises"). A depiction of
the Premises is attached hereto as EXHIBIT "A". The total square footage of the
Premises is approximately 16,027+ rentable square feet, which amount shall be
deemed to be the size of the Premises for all purposes. During the Term, Tenant
shall have the right to use in common with other tenants of the Building, their
invitees, customers and employees, the lobby areas, stairways, elevators,
hallways, lavatories and all other parts of the Building designated by Landlord
as common areas together with the parking areas appurtenant to the Building. All
of the land and real property underlying the Building or adjacent thereto, with
all improvements thereto including the Building, and used in connection with the
operation of the Building, together with the parking areas appurtenant to the
Building, shall be referred to herein as the "Property".

SECTION 1.2. TERM. Commencing on the earlier of May 25, 2000 or thirty (30) days
after Landlord notifies Tenant that the Premises are ready for occupancy (the
"Commencement Date") Tenant shall have and hold the Premises for a term of one
hundred twenty (120) months (hereinafter referred to as the "Term" or "Lease
Term") of the Premises, as hereinafter provided and expiring one hundred twenty
(120) months thereafter (the "Expiration Date"). As used herein, the term "Rent
Commencement Date" shall mean the Commencement Date. In the event the Rent
Commencement Date occurs on a day other than the first day of a calendar month,
the first Base Rent and Additional Rent (hereinafter defined) payment shall be
in the amount of the Base Rent and Additional Rent for the next full calendar
month plus the prorated Base Rent and Additional Rent for the calendar month in
which the Term of this Lease commences, such payment to be due on the
Commencement Date.

ARTICLE 2: BASE RENT

SECTION 2.1. BASE RENT; LATE CHARGE; SALES TAX. Tenant agrees to pay Landlord
base rent for the first year of the Lease Term in the amount of $350,991.30 (the
"Base Rent"), payable in twelve (12) equal monthly installments of $29,249.28 on
or before the first day of each and every month during the first year of the
Lease Term. In addition, Tenant agrees to pay Additional Rent (hereafter
defined) as provided in Article 3 below (the Base Rent and Additional Rent shall
be considered Rent as that term is used in Florida Statute Chapter 83 and shall
sometimes be collectively referred to as the "Rent"). The Rent shall be paid by
Tenant without demand, offset or deduction. In the event any monthly installment
of Rent payment is not paid in full on or before the tenth (10th) day of each
calendar month, in addition to any other remedies Landlord may

<PAGE>   4

have under this Lease, at law or in equity, Tenant agrees to pay a late charge
equal to three percent (3%) of the delinquent amount. Tenant further agrees that
the late charge assessed pursuant to this Lease is not interest, and the late
charge assessed does not constitute a lender or borrower/creditor relationship
between Landlord and Tenant, and may be treated by Landlord as Additional Rent
owed by Tenant. Tenant shall pay to Landlord all sales, use or other taxes
(other than income or franchise taxes applicable to the Landlord or the
Landlord's operation) pertaining to the Rent which shall be remitted by Landlord
to the Florida Department of Revenue or other appropriate taxing authority.

SECTION 2.2. BASE RENT ADJUSTMENT. Commencing on the first anniversary of the
Rent Commencement Date (provided such anniversary date falls on the first day of
the month, otherwise on the first day of the following month) and each and every
annual anniversary thereafter (each a "Lease Year"), the Base Rent shall
increase on an annual basis by three percent (3%) of Base Rent (as the same may
have been previously adjusted) for the immediately precedent Lease Year.

         2.2.1 Following adjustment in accordance with the provisions hereof,
the phrase "Base Rent" as used in this Lease shall refer to the Base Rent as
adjusted in accordance with this paragraph throughout the term of this Lease.

         2.2.2 In no event shall the Base Rent increase more than three percent
(3%) per Lease Year throughout the Term.

         2.2.3 Except as specifically set forth herein with regard to casualty
or condemnation, in no event shall that Adjusted Base Rent for any Lease Year be
less than the Base Rent (as may have theretofore been adjusted) for any prior
Lease Year.

SECTION 2.3. PLACE OF PAYMENT. All payments of Rent shall be payable to
Landlord, 5000 Sawgrass Village Circle, Suite 28, Ponte Vedra Beach, Florida
32082, or at such other place as Landlord may, from time to time, designate in
writing to Tenant. All Rent shall be payable in current legal tender of the
United States, as the same is then by law constituted. Any extension,
indulgence, or waiver granted or permitted by Landlord in the time, manner or
mode of payment of Rent, upon any one (1) or more occasions, shall not be
construed as a continuing extension, indulgence or waiver by Landlord.

ARTICLE 3:  ADDITIONAL RENT

SECTION 3.1. ADDITIONAL RENT. Tenant, on the first day of each month during the
Term, shall pay to Landlord, as Additional Rent, without demand, offset or
deduction, an amount equal to 1/12 of Tenant's Proportionate Share of the
budgeted Operating Expenses as calculated by Landlord (prorated for any partial
month) to the extent Tenant's Proportionate Share of Operating Expenses exceeds
the Operating Expense Stop. In addition, Tenant shall pay the full cost of any
items billed on a per square foot basis, such as janitorial services or
particular to Tenant. For purposes of calculating Additional Rent, the following
terms shall have the meanings set forth below:

         3.1.1 OPERATING EXPENSES. All expenses relating to the operation and
maintenance of the Property, including without limitation the following:

         (a)      wages and salaries of all persons engaged in the maintenance
                  and operation of the Property, including social security taxes
                  and all other taxes which may be levied against Landlord;

         (b)      medical and general benefits for all Building employees,
                  pension payments and other fringe benefits;

                                       2
<PAGE>   5

         (c)      administrative expenses and charges;

         (d)      all insurance premiums, including any insurance premiums for
                  Landlord's insurance;

         (e)      stand-by sprinkler charges, water charges and sewer charges;

         (f)      electricity and fuel used in the heating, ventilation,
                  air-conditioning, lighting and all other operations of the
                  Property;

         (g)      trash removal and recycling expenses;

         (h)      painting of all common areas within the Property, including
                  painting, striping and the provision of signage on all
                  pavement curbs, walkways, driveways and parking areas;

         (i)      window cleaning, janitorial services and related equipment and
                  supplies;

         (j)      management fees incurred in the operation of the Property;

         (k)      cleaning, maintenance and repair of the Property;

         (l)      maintenance and service contracts;

         (m)      tools, equipment and supplies necessary for the performance of
                  repairs and maintenance (which are not required to be
                  capitalized for federal income tax purposes);

         (n)      maintenance and repair of all mechanical, electrical and
                  intrabuilding network cabling equipment in or upon the
                  Property;

         (o)      cleaning, maintenance and repair of elevators, restrooms,
                  lobbies, hallways and other common areas of the Building;

         (p)      cleaning, maintenance and repair of pavement, curbs, walkways,
                  lighting facilities, landscaping, driveways, parking areas and
                  drainage areas upon and adjacent to the Property;

         (q)      personal property taxes;

         (r)      real estate taxes assessed against the Property. The term
                  "real estate taxes" shall mean any tax or assessment levied,
                  assessed or imposed at any time by any governmental authority
                  upon or against the Property or any part thereof, any tax or
                  assessment levied, or any franchise, income, profit or other
                  tax or governmental imposition levied, assessed or imposed
                  against or upon Landlord in substitution in whole or in part
                  for any tax or assessment against or upon the Property or any
                  part thereof;

         (s)      assessments for public improvements imposed against the
                  Property;

         (t)      all other costs and expenses which would be considered as an
                  expense of cleaning, maintaining, operating or repairing the
                  Property;

         (u)      a reasonable amortization cost due to any capital expenditures
                  incurred to reduce or limit operating expenses of the
                  Property;

                                       3
<PAGE>   6

         (v)      the amortized portion of any cost or expense for any capital
                  expenditure which may be required by governmental authority
                  for any reason, or which may be required by Landlord's
                  insurance carrier;

         (w)      any and all costs associated with providing and maintaining
                  security for the Property, including any security systems and
                  security personnel;

         (x)      any and all costs associated with any governmental taxes,
                  levies or impositions arising after the execution of this
                  Lease; and

         (y)      janitorial expenses provided by Landlord to the Premises in
                  accordance with paragraph below.

         3.1.2    Operating Expenses shall not include costs and expenses which
                  are:

         (a)      charged to or chargeable to a particular tenant or tenants of
                  the Building;

         (b)      charged to or chargeable to tenants of any other Building
                  owned by Landlord or managed in common with the Project;

         (c)      covered by any insurance (except to the extent of any
                  deductible paid by Landlord) or not actually paid by or on
                  behalf of Landlord; and

         (d)      rent abatement, rent allowances, tenant improvements,
                  collection expenses for delinquent amounts, advertising
                  expenses for the Project, rent inducements, leasing or
                  brokerage commissions or similar leasing expenses.

         (e)      the costs of any repairs or replacements which by sound
                  accounting practices should be capitalized. In this
                  connection, the good faith decision of Landlord's accountants
                  made in conformity with generally accepted accounting
                  practices, historically applied, shall be final.

         (f)      for those costs and expenses (a) shared among or attributable
                  to property other than the Building and/or (b) for Common
                  Areas used in common with other buildings in the Project; with
                  any other building owned by Landlord or any other building
                  managed in common with the Project to the extent the same
                  exceed the fair apportionment of such costs and expenses to
                  the Building.

         (g)      the costs of management fees, expenses and charges which
                  exceed the lesser of:

                  (i) amount of management fees, expenses and charges chargeable
                  by national commercial firms managing Class A commercial
                  buildings in the metropolitan Jacksonville area; and

                  (ii) Five percent (5%) of the gross rents received from
                  tenants in the Building.

         3.1.3    Tenant shall pay the full cost of any items billed on a per
square foot basis, to the extent provided to Tenant and/or the Premises.

         3.1.4.   TENANT'S PROPORTIONATE SHARE. A fraction having as a numerator
the total rentable square footage of the Premises as set forth in Section above
and a denominator of the total rentable square footage

                                       4
<PAGE>   7

in the Building, to-wit: 32,054 rentable square feet. Thus, Tenant's
proportionate share under this Lease shall be 50%.

         3.1.5. OPERATING EXPENSE STOP. $6.00 per rentable square foot of the
Premises. In the event Tenant shall be required to reimburse Landlord for
Operating Expenses over and above the Operating Expense Stop, for any lease year
following the initial Lease Year, Landlord may increase the Operating Expense
Stop to accommodate the estimation of such increase and include a pro rata share
of such increase in Tenant's monthly installments of Base Rent. Adjustments made
in accordance with this paragraph 3.1.5 shall be in addition to any other
Adjustments of Base Rent under this Lease.

SECTION 3.2. OPERATING EXPENSE BUDGET. Landlord shall furnish to Tenant on or
before February 1 of each calendar year of the Term, a budget setting forth
Landlord's estimate of Operating Expenses for the subject calendar year.
Operating Expenses shall be calculated based upon the higher of the actual
occupancy of the Building for the calendar year or an assumed occupancy rate of
95%. If there shall be any increase in the Operating Expenses for any calendar
year, whether during or after such year, Landlord shall furnish to Tenant a
revised budget and the Operating Expenses shall be adjusted and paid or
credited, as the case may be. If a calendar year ends after the expiration or
termination of this Lease, the Additional Rent payable hereunder shall be
prorated to correspond to that portion of the calendar year occurring within the
Term.

         3.2.1 In no event shall Tenant's Proportionate Share of Operating
Expenses, excluding real estate and ad valorem taxes, insurance premiums and
elective utility costs increase by more than five percent (5%) over the prior
Calendar Year, except as set forth in paragraph 3.2.2 below.

         3.2.2 At the time of adjustment of Operating Expenses for any Lease
Year in accordance with paragraph 3.2 above, in the event the increase in the
CPI as available for the last calendar month of the immediately preceding Lease
Year (or the latest such month in such calendar year for which the CPI
information in available) shall exceed 7.5%, then the provisions of paragraph
3.2.1 shall not apply and Tenant shall be responsible for all of Tenant's
Proportionate Share of Operating Expenses over the Operating Expense Stop.

         (a)      CPI means the index of changes of prices and services
                  purchased by urban wage earner and clerical worker families to
                  maintain their level of living - all items - all cities - as
                  compiled and published by the United States Department of
                  Labor, Bureau of Labor Statistics. If any time such index is
                  no longer compiled or published by the Department of Labor,
                  Landlord will select such other index or standard as shall
                  most clearly reflect changes in the cost of living for urban
                  wage earners and which is generally recognized as
                  authoritative by financial and insurance institutions.
                  Thereafter the substitute index shall be the CPI.

         3.2.3. ADJUSTMENTS TO OPERATING EXPENSES. Within 120 days after the end
of each calendar year, Landlord shall furnish to Tenant an operating statement
showing the actual Operating Expenses incurred for the preceding calendar year.
Tenant shall either receive a refund or be assessed an additional sum based upon
the difference between Tenant's Proportionate Share of the actual Operating
Expenses over and above the Additional Rent payments made by Tenant during said
year. Any additional sum owed by Tenant to Landlord shall be paid within ten
(10) days of receipt of assessment. Any refund owed by Landlord to Tenant shall
be credited toward Tenant's next month's rental payment. Each operating
statement given by Landlord shall be conclusive and binding upon Tenant unless,
within thirty (30) days after Tenant's receipt thereof, Tenant shall notify
Landlord that it disputes the accuracy of said operating statement. In such
case, Tenant shall have the right, at its expense to audit said statement, in
the event Tenant finds discrepancies resulting in a savings to Tenant in excess
of ten percent (10%), then Landlord would agree to reimburse Tenant for audit.

                                       5
<PAGE>   8

Failure of Landlord to submit the written statement referred to herein shall not
waive any rights of Landlord, unless such statement is not submitted within one
year from the end of the prior calendar year.

ARTICLE 4: RESERVED

ARTICLE 5: USE OF PREMISES

SECTION 5.1. USE OF PREMISES. Tenant shall use the Premises for general office
use only and no other purpose without first obtaining the written consent of
Landlord, which consent will not be unreasonably withheld or delayed. Tenant
will not use or permit the use of the Premises or any part thereof for any
unlawful purpose, or in violation of any ordinances, laws, rules or regulations
of any governmental body or of Landlord's Rules and Regulations as provided for
in Exhibit "C" to this Lease. Landlord may make reasonable revisions to the
Rules and Regulations from time to time as it deems to be in the best interests
of the Building and its tenants. Tenant shall not do or permit any act which
would constitute a public or private nuisance or waste or which would be a
nuisance or annoyance or cause damage to Landlord or Landlord's other tenants or
which would invalidate any policies of insurance or increase the premiums
thereof now or hereafter written on the Building and/or Premises.

ARTICLE 6: PARKING

SECTION 6.1. PARKING. There shall be available at the Property on a first come
first served basis, parking free of charge, for the non-exclusive use of Tenant,
in common with other tenants of the Building .

ARTICLE 7: CONDITION OF PREMISES AND COMMENCEMENT

SECTION 7.1. CONDITION OF PREMISES. Tenant acknowledges that it has performed
sufficient inspections of the Premises in order to fully assess and make itself
aware of the condition of the Premises, and that Tenant hereby accepts the
Premises in an "as-is" condition. Landlord has not made and hereby expressly
disclaims any and all warranties and representations as to the condition or
status of the Premises, and Tenant further acknowledges that it is not relying
on any representations or warranties of Landlord, any broker(s), or any agent(s)
of Landlord in entering into this Lease. The Approved Floor Plan is attached
hereto as EXHIBIT "D" and the Tenant Improvement Specifications are attached as
EXHIBIT "E".

SECTION 7.2. COMMENCEMENT DATE. The "Commencement Date" shall be the date
Landlord specifies in its notice to Tenant that the Premises are ready for
occupancy by Tenant, but not later than May 25, 2000.

SECTION 7.3. ACCEPTANCE OF PREMISES. Tenant acknowledges that Landlord shall
stand by its written representations and/or written warranties (if any) with
respect to the condition of the Premises. The taking of possession of the
Premises by Tenant shall be conclusive evidence that the Premises were in good
and satisfactory condition at the time such possession was taken, except for the
minor insubstantial details of a "punch list" type nature of which items Tenant
gives Landlord notice within thirty (30) days after the Commencement Date. If
Landlord shall give Tenant permission to enter into possession of the Premises
prior to the Commencement Date, such possession or occupancy shall be deemed to
be upon all the terms, covenants, conditions, and provisions of this Lease,
including the execution of the Estoppel Certificates.

ARTICLE 8: LANDLORD AND TENANT OBLIGATIONS

SECTION 8.1. LANDLORD REPAIRS. Landlord will not be required to make any
improvements, replacements or repairs of any kind or character to the Premises
during the term of this Lease, except as are set forth in this Section. Landlord
will maintain only the roof, foundation, parking and Common Areas, the
structural

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<PAGE>   9

soundness of the exterior walls and air conditioning and heating equipment,
mechanical doors and other mechanical equipment serving the Building(s)
generally. Landlord's cost of maintaining the items set forth in this Section is
subject to the Additional Rent provisions above. All work provided by Landlord
and/or condition of the Premises at the time of Tenant's possession shall be
warranted as to materials and workmanship by Landlord for a period of one (1)
year from the Commencement Date. Provided Landlord shall undertake to remedy
defects in workmanship or materials in a prompt manner upon request by Tenant,
and so long as the Premises are generally suitable to occupation by Tenant,
Landlord will NOT be liable to Tenant for any damage or inconvenience, NOR WILL
Tenant be entitled to any damages and/or any abatement or reduction of Rent by
reason of any repair, alterations or additions made by Landlord under this
Lease.

SECTION 8.2. TENANT REPAIRS. Tenant will, at its direct expense, maintain the
Premises in good condition (except for those items listed under Section 8.1
below). Without limiting the generality of the foregoing, Tenant will maintain
and keep in as good repair as on the Commencement Date or such later date of
receipt by Tenant (including replacement when necessary):

         8.2.1 the interior of the Premises, including walls, floors and
ceilings.

         8.2.2 all windows and interior doors, including frames, glass, molding
and hardware;

         8.2.3 all wires and plumbing within the Premises which service the
Premises (as distinguished from those serving the Building(s) generally), except
that all restroom areas shall be maintained by the Landlord;

         8.2.4 all signs, (see attached Rules and Regulations for service
requirements); and

         8.2.5 those utility facilities installed by or at the request of Tenant
not common to the rest of the Building.

Tenant will further make all other repairs to the Premises made necessary by
Tenant's failure to comply with its obligations under this Section. All fixtures
installed by Tenant will be new or will have been completely and recently
reconditioned.

SECTION 8.3. REQUEST FOR REPAIRS. All requests for repairs or maintenance to
Landlord pursuant to Section 8.1 above must be made in writing to Landlord.

SECTION 8.4. TENANT DAMAGES. Tenant will not allow any damage to occur on any
portion of the Premises, and at the termination of this Lease, by lapse of time
or otherwise, Tenant will deliver the Premises to Landlord in as good repair as
on the Commencement Date or such later date of receipt by Tenant, ordinary wear
and tear excepted.

SECTION 8.5. FLOOR LOADS; NOISE AND VIBRATION. Tenant shall not place a load
upon any floor of the Premises which exceeds the load per square foot which such
floor was designed to carry or which is allowed by law. Business machines and
mechanical equipment belonging to Tenant which cause noise, electrical
interference or vibration that may be transmitted to the structure of the
Building or to the Premises to such a degree as to be objectionable to Landlord
shall, at Tenant's expense, be placed and maintained by Tenant in settings of
cork, rubber, or spring-type vibration eliminators sufficient to eliminate such
noise, electrical interference or vibration.

                                       7
<PAGE>   10

SECTION 8.6. SERVICES. Landlord shall furnish to the Premises reasonable
quantities of heat, ventilation and air conditioning ("HVAC"), electricity,
elevator service and water at all times during the Term from 7:30 a.m. to 6:00
p.m. Monday through Friday and 8:00 a.m. to 12:00 p.m. on Saturdays. On Sundays,
New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, and
Christmas Day such service shall not be provided by Landlord. Landlord will
provide after-hour HVAC service upon reasonable advance request and Tenant will
be charged an hourly rate of $25.00 per hour, subject to increase based upon
increases in the utility provider's charge per kilowatt hour for electrical
service that takes place subsequent to execution of this Lease. Electricity,
water and elevator service will be provided at all times, subject to matters
beyond the reasonable control of Landlord.

Tenant shall not without Landlord's prior written consent in each instance,
connect any fixtures, appliances or equipment to the Building's electrical
system which would materially, in Landlord's reasonable opinion, increase
Tenant's electrical consumption. Should Landlord grant such consent, all
additional risers or other equipment required shall be provided by Landlord and
the cost thereof shall be paid by Tenant within ten (10) days after being billed
therefore. As a condition to granting such consent, Landlord may require Tenant
to agree to pay, as Additional Rent, an amount adequate to compensate for the
additional electrical energy to be made available to Tenant based upon the
estimated additional capacity of such additional risers or other equipment, as
determined by Landlord from time to time.

SECTION 8.7. JANITORIAL SERVICES. Landlord shall cause the Premises, including
the exterior and interior of the windows thereof, to be cleaned in a manner
standard to the Building. Landlord shall provide janitorial service three (3)
days per week which would include a minimum of custodial service (trash removal,
floor cleaning, dusting and lavatory cleaning and sanitation). As an incidence
of Additional Rent, Tenant shall pay to Landlord on demand, the additional cost
incurred by Landlord for extra cleaning work in the Premises required because of
(i) misuse or neglect on the part of Tenant or subtenants or its employees or
visitors; and (ii) non-building standard materials or finishes installed by
Tenant or at its request.

SECTION 8.8. TELEPHONE AND CABLE. Tenant shall be solely responsible for all
telephone, television, cable and other communication expenses incurred in
connection with Tenant's use of the Premises. Landlord shall provide base
telephone services to the Building.

ARTICLE 9:  LANDLORD'S AND TENANT'S PROPERTY

SECTION 9.1. LANDLORD'S PROPERTY. All fixtures, equipment, improvements and
appurtenances attached to or built into the Premises at the commencement of, or
during the Term of this Lease, including carpeting or other similar personal
property, whether or not by or at the expense of Tenant, shall be and remain a
part of the Premises, and shall be deemed the property of Landlord ("Landlord's
Property") and shall not be removed by Tenant except as set forth herein.

SECTION 9.2. TENANT'S PROPERTY. All business and trade fixtures, machinery and
equipment, communications equipment and office equipment, whether or not
attached to or built into the Premises, which are installed in the Premises by
or for the account of Tenant without expense to Landlord and which can be
removed without damage to the Premises or any structural damage to the Building,
and all furniture, furnishings and other articles of moveable personal property
owned by Tenant and located in the Premises (hereinafter collectively referred
to as "Tenant's Property") shall remain the property of Tenant and may be
removed by Tenant at any time during the Term of this Lease. In the event
Tenant's Property is so removed, Tenant shall repair or pay the cost of
repairing any damage to the Premises or to the Building resulting from the
installation and/or removal thereof.

                                       8
<PAGE>   11

SECTION 9.3. REMOVAL OF TENANT'S PROPERTY. At or before the Expiration Date of
this Lease, or within thirty (30) days after any earlier termination hereof,
Tenant, at its expense, shall remove from the Premises all of Tenant's Property
(except such items thereof as Landlord shall have expressly permitted to remain,
which property shall become the property of Landlord), and Tenant shall repair
any damage to the Premises or the Building resulting from any installation
and/or removal of Tenant's Property, reasonable wear and tear excepted. Any
other items of Tenant's Property which shall remain in the Premises after the
Expiration Date of this Lease, or after a period of thirty (30) days following
an earlier termination date, may, at the option of Landlord, be deemed to have
been abandoned, and in such case, such items may be retained by, or otherwise
disposed of by Landlord. Landlord may request Tenant to remove and pay to
Landlord the cost of repairing any damage to the Premises or the Building
resulting from any installation and/or removal of Tenant's Property, reasonable
wear and tear excepted.

ARTICLE 10: INSURANCE

SECTION 10.1. TENANT'S INSURANCE.

         10.1.1 Tenant shall, at its cost and expense, obtain and maintain at
all times during the Term, for the protection of Landlord and Tenant, public
liability insurance (comprehensive general liability or commercial general
liability) including contractual liability insurance, with a combined personal
injury and property damage limit of not less than Five Million Dollars
($5,000,000.00) (combined single limit), insuring against all liability of
Tenant and its representatives arising out of and in connection with Tenant's
use or occupancy of the Property. Landlord and Landlord's Superior Mortgagee (as
their interest shall appear) shall be named as additional insureds.

         10.1.2 Tenant shall, at its cost and expense, obtain and maintain at
all times during the Term, fire and extended coverage insurance on the contents.

         10.1.3 Tenant shall increase its insurance coverage, as required, but
not more frequently than each calendar year if, in the reasonable opinion of
Landlord or any mortgagee of Landlord, the amount of public liability and/or
property damage insurance coverage at that time is not adequate.

SECTION 10.2. LANDLORD'S INSURANCE. Landlord, at its expense, shall maintain in
force during the Term:

         10.2.1 comprehensive general public liability insurance, which shall
include coverage for personal liability, contractual liability, Landlord's legal
liability, bodily injury (including death) and property damage, all on an
occurrence basis with respect to the Property with coverage for any one
occurrence or claim of not less than Five Million Dollars ($5,000,000) (combined
single limit) or such higher amount as the Superior Mortgagee may from time to
time require, with Tenant being named as an additional insured; and

         10.2.2 fire and extended coverage insurance, with an agreed amount
endorsement and for the full replacement value of the Building for the
replacement value of the leasehold improvement to the Premises.

SECTION 10.3. INSURANCE CRITERIA. All insurance required under this Lease shall
be issued by insurance companies licensed to do business in the jurisdiction
where the Property is located. Such companies shall have a policyholder rating
of at least "A" and be assigned a financial size category of at least "Class X"
as rated in the most recent edition of "Best's Key Rating Guide" for insurance
companies. Each policy shall contain an endorsement requiring thirty (30) days
written notice from the insurance company to Landlord before cancellation or any
change in the coverage, scope or amount of any policy. Each policy, or a
certificate showing it is in effect, together with evidence of payment of
premiums, shall be deposited with Landlord on

                                       9
<PAGE>   12

or before the Commencement Date, and renewal certificates or copies of renewal
policies shall be delivered to Landlord at least thirty (30) days prior to the
expiration date of any policy.

SECTION 10.4. EVIDENCE OF INSURANCE. Prior to the Commencement Date and upon
each renewal of its insurance policies, each party shall give certificates of
insurance to the other party. The certificate shall specify amounts, types of
coverage and the waiver of subrogation. The policies shall be renewed or
replaced and maintained by the party responsible for that policy. If either
party fails to give the required certificate within thirty (30) days after
written notice of demand for it, the other party may obtain and pay for that
insurance and receive reimbursement from the party required to have insurance,
plus interest on the amounts advanced at 18% simple interest per annum.

SECTION 10.5. INSURANCE RISK INCREASES. If any of Landlord's insurance policies
shall be canceled or cancellation shall be threatened or the coverage thereunder
reduced or threatened to be reduced in any way because of the use of the
Premises or any part thereof by Tenant or any assignee or subtenant of Tenant or
by anyone Tenant permits on the Premises where such usage is for other than
general office use and would, in the underwriter's reasonable opinion, increase
the risk of fire or other casualty, and if Tenant fails to remedy the condition
within a reasonable time after notice thereof, Landlord may at its option,
either terminate this Lease (but only after written notice) or enter upon the
Premises and attempt to remedy such condition, and Tenant shall promptly pay the
cost thereof to Landlord. Landlord shall not be liable for any damage or injury
caused to any property of Tenant or of others located on the Premises from such
entry.

SECTION 10.6. WAIVER OF SUBROGATION. All policies covering real or personal
property which either party obtains affecting the Property shall include a
clause or endorsement denying the insurer any rights of subrogation or recovery
against the other party to the extent rights have been waived by the insured
before the occurrence of injury or loss. Landlord and Tenant hereby waive any
rights of subrogation or recovery against the other for damage or loss to their
respective property due to hazards covered or which should be covered by
policies of insurance obtained or which should be or have been obtained pursuant
to this Lease, to the extent of the injury or loss covered thereby assuming that
any deductible shall be deemed to be insurance coverage.

SECTION 10.7. DESTRUCTION OF THE PREMISES OR BUILDING. If, during the Term
hereof, the Premises are damaged by reason of fire or other casualty, Tenant
shall give immediate notice thereof to Landlord. Subject to the prior rights of
any mortgagee, Landlord shall restore the Premises to substantially the same
condition they were in immediately before said destruction. Landlord shall
provide its opinion within sixty (60) days of the casualty. If, in Landlord's
architect's and contractor's reasonable opinion, the restoration can be
accomplished within two hundred seventy (270) calendar days after the date
Landlord receives notice of the destruction, such destruction shall not result
in a termination of this Lease. If, in Landlord's architect's and contractor's
reasonable opinion, the restoration cannot be performed within the time stated
in this paragraph, then within fifteen (15) days after the determination or the
date the determination was due that the restoration cannot be completed within
said time, Landlord or Tenant may terminate this Lease upon fifteen (15) days
notice to the other party. If Landlord and/or Tenant fails to terminate this
Lease and restoration is permitted under existing laws, Landlord shall restore
the Premises within a reasonable period of time not exceeding two hundred
seventy (270) calendar days from the date of the casualty, and this Lease shall
continue in full force and effect. Rent and all other charge shall be abated
during the period in which the Premises (or portion thereof on a prorated basis)
are rendered untenantable as a result of such damage, unless said damage was
caused by the negligence or intentional wrongful act of Tenant or its officers,
employees, agents or invitees. Should Landlord elect to terminate this Lease,
the entire insurance proceeds shall be and remain the outright property of
Landlord, subject to the prior rights of any mortgagee and except any proceeds
received for Tenant's Property, or proceeds received from Tenant's business
interruption insurance, if any.

                                       10
<PAGE>   13

         In the event that the Building has been damaged or destroyed by fire or
other casualty to the extent that the cost of restoration of the Building will
exceed a sum constituting fifty percent (50%) of the total replacement cost
thereof, Landlord shall have the right to terminate this Lease provided that
notice thereof is given to the Tenant not later than sixty (60) days after such
damage or destruction in the event Landlord elects not to restore the Building
and terminates all other leases for space in the Building.

ARTICLE 11:  ALTERATIONS AND MECHANIC'S LIENS

SECTION 11.1. ALTERATIONS BY TENANT. No alterations shall be made by Tenant
after completion of Tenant Improvements unless the conditions listed below are
met. As used herein, the alterations shall not include revisions, restorations
or repairs which are minor and are merely decorative in nature.

         11.1.1 Tenant shall provide a sealed set of plans prepared and
certified by an architect to Landlord, and Tenant shall have received the prior
written consent of Landlord;

         11.1.2 all such alterations or improvements shall be performed by a
licensed contractor approved by Landlord;

         11.1.3 Tenant shall have procured all permits, licenses and other
authorizations required for the lawful and proper undertaking thereof, and
immediately upon completion of any such alterations, Tenant shall obtain a
proper Certificate of Occupancy if applicable and deliver same to Landlord;

         11.1.4 all alterations when completed shall be of such a nature as not
to (i) reduce or otherwise adversely affect the value of the Premises; (ii)
diminish the general utility or change the general character thereof; (iii)
result in an increase of the Operating Expenses, or (iv) adversely affect the
mechanical, electrical, plumbing, security or other such systems of the Building
or the Premises;

         11.1.5 all alterations made by Tenant shall remain on and be
surrendered with the Premises on expiration or termination of this Lease; and

         11.1.6 Tenant shall be liable for any increase in the Building
insurance costs caused, in whole or part, by any alterations make by Tenant to
the Premises.

SECTION 11.2. MECHANIC'S, MATERIALMEN'S AND LABORER'S LIENS. Tenant agrees that
it will make full and prompt payment of all sums necessary to pay for the cost
of repairs, alterations, improvements, changes or other work done by Tenant to
the Premises and further agrees to indemnify and hold harmless Landlord from and
against any and all such costs and liabilities incurred by Tenant, and against
any and all mechanic's, materialman's or laborer's liens arising out of or from
such work or the cost thereof which may be asserted, claimed or charged against
the Premises, the Building or the Property. Notwithstanding anything to the
contrary in this Lease, the interest of Landlord in the Property shall not be
subject to liens for improvements made by or for Tenant, whether or not the same
shall be made or done in accordance with any agreement between Landlord and
Tenant and it is specifically understood and agreed that in no event shall
Landlord or the interest of Landlord in the Property be liable for or subjected
to any mechanic's, materialmen's or laborer's liens for improvements or work
made by or for Tenant. THIS LEASE SPECIFICALLY PROHIBITS THE SUBJECTING OF
LANDLORD'S INTEREST IN THE PROPERTY TO ANY MECHANIC'S, MATERIALMEN'S OR
LABORER'S LIENS FOR IMPROVEMENTS MADE BY TENANT OR FOR WHICH TENANT IS
RESPONSIBLE FOR PAYMENT UNDER THE TERMS OF THIS LEASE. ALL PERSONS DEALING WITH
TENANT ARE HEREBY PLACED UPON NOTICE OF THIS PROVISION. TENANT SHALL ADVISE ITS
CONTRACTORS, SUBCONTRACTORS, MATERIALMEN AND ANY OTHER LIENORS OF THIS
PROVISION. In the event any notice or claim

                                       11
<PAGE>   14

of lien shall be asserted of record against the interest of Landlord in the
Property on account of or growing out of any improvement or work done by or for
Tenant, or any person claiming by, through or under Tenant, for improvements or
work the cost of which is the responsibility of Tenant, Tenant agrees to have
such notice of claim of lien canceled and discharged of record as a claim
against the interest of Landlord in the Property (either by payment or bond as
permitted by law) within thirty (30) days after notice to Tenant by Landlord.

ARTICLE 12: ASSIGNMENT AND SUBLETTING

SECTION 12.1. TENANT'S TRANSFER.

         12.1.1 Tenant shall not voluntarily assign or encumber its interest in
this Lease or in the Premises, or sublease all or any part of the Premises, or
allow any other person or entity to occupy or use all or any part of the
Premises, without first obtaining Landlord's written consent, which consent may
be withheld by Landlord in Landlord's reasonable discretion utilizing Landlord's
leasing criteria in effect at that time. Any assignment, encumbrance or sublease
without Landlord's prior written consent shall be voidable and, at Landlord's
election, shall constitute a default hereunder. No consent to any assignment,
encumbrance, or sublease shall constitute a future waiver of the provisions of
this subparagraph.

         12.1.2 If Tenant is a partnership, a withdrawal or change, voluntary,
involuntary, or by operation of law of any partner/or partners owning 50% or
more of the partnership, or the dissolution of the partnership, shall be deemed
a voluntary assignment, subject to the requirements of Section above.

         12.1.3 Any assignment consented to by Landlord shall be evidenced by a
validly executed assignment and assumption of lease agreement, upon such terms
and provisions as shall be approved by Landlord in its sole discretion.

         12.1.4 If, without the prior written consent of Landlord, this Lease is
transferred or assigned by Tenant, or if the Premises, or any part thereof, are
sublet or occupied by anybody other than Tenant, whether as a result of any act
or omission by Tenant, or by operation of law or otherwise, Landlord may, in
addition to and not in diminution of, or substitution for, any other rights and
remedies under this Lease, or pursuant to law to which Landlord may be entitled
as a result thereof, collect and retain Rent directly from the transferee,
assignee, subtenant or occupant and apply the net amount collected to the Rent
due from Tenant to Landlord under this Lease.

         12.1.5 If Tenant requests Landlord's consent to a sublease as defined
in paragraph 12.1.1, then Landlord shall have the option (to be exercised within
ten (10) business days after Landlord's receipt of Tenant's submission of
written request for Landlord's consent and all information reasonably requested
by Landlord regarding the proposed subtenant in connection therewith),
exercisable by Landlord in its sole and absolute discretion, to cancel this
Lease as to the portion of the premises to be demised under the proposed
sublease as of the commencement date of the proposed sublease, in which event
this Lease, and the tenancy and occupancy of Tenant thereunder, as to that
portion of the premises to be demised under the proposed sublease, shall
terminate as if such termination date was the original Expiration Date of this
Lease. If Landlord should fail to notify Tenant in writing of such election
within such ten (10) business day period, Landlord shall be deemed to have
waived such termination right. With any termination of this Lease (in whole or
in part) pursuant to the provisions of this paragraph, Tenant shall deliver up
possession of the subject portion of the Premises in accordance with the
applicable provisions of this Lease and shall remove Tenant's property therein
in accordance with the applicable provision of this Lease.

SECTION 12.2. TENANT'S LIABILITY. Notwithstanding any assignment or sublease,
and notwithstanding the acceptance of Rent by Landlord from any such assignee or
sublessee, Tenant shall continue to remain liable

                                       12
<PAGE>   15

for the payment of Rent hereunder and for the performance of all of the
agreements, conditions, covenants and terms herein contained.

ARTICLE 13: OBLIGATION TO COMPLY

SECTION 13.1. OBLIGATIONS OF TENANT. Tenant shall, during the Term of this
Lease, at its sole cost and expense, comply with all valid laws, ordinances,
regulations, orders and requirements of any governmental authority which may now
or hereafter be applicable to the Premises or to its use, whether or not the
same shall interfere with the use or occupancy of the Premises, arising from (a)
Tenant's particular use of the Premises; (b) the particular manner or conduct of
Tenant's business or operation of its installations, equipment or other property
therein; (c) any cause or condition created by or at the instance of Tenant
which is unique to Tenant; or (d) breach of any of Tenant's obligations
hereunder, whether or not such compliance requires work which is structural or
non-structural, ordinary or extraordinary, foreseen or unforeseen. Tenant shall
pay all of the costs, expenses, fines penalties and damages which may be
incurred by Landlord by reason or arising out of Tenant's failure to fully and
promptly comply with and observe the provisions of this Section. Tenant shall
give prompt notice to Landlord of any notice it receives of the violation of any
law or requirement of any public authority with respect to the Premises or the
use or occupation thereof. Landlord's and Tenant's respective obligations to
comply with laws shall include, without limitation, those laws and regulations
contemplated by Title III of the Americans With Disabilities Act of 1990, as
amended. In the event Tenant receives any notice alleging violation of any of
the aforementioned laws, ordinances, regulations, orders, rules or requirements
relating to any portion of the Property; or any notice of regulatory action or
investigation instituted in connection therewith, Tenant shall provide written
notice to Landlord thereof within five (5) days after receipt of same by Tenant.

SECTION 13.2. RULES AND REGULATIONS. Tenant shall comply with all reasonable
rules and regulations now existing (See EXHIBIT "C"), or as may be published by
Landlord to tenants of the Building from time to time.

SECTION 13.3. ATTORNEYS' FEES. With respect to any default, failure to perform
or any other dispute between Tenant and Landlord arising out of this Lease, the
prevailing party shall be entitled to recover from the non-prevailing party all
costs incurred, including reasonable attorney's costs and fees, which shall
include, but not be limited to, such costs and fees incurred prior to
institution of litigation or in litigation, including trial and appellate
review, and in arbitration, bankruptcy or other administrative or judicial
proceeding.

ARTICLE 14: RIGHT OF LANDLORD TO PERFORM TENANT'S COVENANTS

SECTION 14.1. PAYMENT OR PERFORMANCE. Landlord shall have the right, upon ten
(10) days prior written notice to Tenant (or without notice in case of emergency
or in order to avoid any fine, penalty, or cost which may otherwise be imposed
or incurred), to make any payment or perform any act required of Tenant under
any provision in this Lease, and in exercising such right, to incur necessary
and incidental costs and expenses, including reasonable attorney's costs and
fees. Nothing herein shall imply any obligation on the part of Landlord to make
any payment or perform any act required of Tenant, and the exercise of the right
to do so shall not constitute a release of any obligation, waiver of any default
or obligation of Landlord to make any similar payment or perform any similar act
in the future.

SECTION 14.2. REIMBURSEMENT. All payments made, and all costs and expenses
incurred in connection with Landlord's exercise of the right set forth in
Section 14.1, shall be reimbursed by Tenant within thirty (30) days after
receipt of a bill setting forth the amounts so expended. Any such payments,
costs and expenses made or incurred by Landlord shall be treated as Rent owed by
Tenant.

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<PAGE>   16

ARTICLE 15: NON-LIABILITY AND INDEMNIFICATION

SECTION 15.1. INDEMNIFICATION.

         15.1.1 Tenant agrees to indemnify and hold harmless Landlord, and its
respective agents and employees, from and against any and all liabilities,
claims, demands, costs and expenses of every kind and nature (including
attorney's fees and costs incurred at trial, on appeal or in bankruptcy
proceedings), including those arising from any injury or damage to any person
(including death), property or business (1) sustained in or about the Property
resulting from the negligence or willful act of Tenant, its employees, agents,
servants, licensees or subtenants, or (2) resulting from the failure of Tenant
to perform its obligations under this Lease; provided, however, Tenant's
obligations under this section shall not apply to injury or damage to the extent
resulting from the negligence or willful act of Landlord, its agents or
employees.

         15.1.2 Landlord agrees to indemnify and hold harmless Tenant, and its
respective agents and employees, from and against any and all liabilities,
claims, demands, costs and expenses of every kind and nature (including
attorneys' fees and costs incurred at trial, on appeal or in bankruptcy
proceedings), arising from any injury or damage to any person (including death),
property or business (1) sustained in or about the Property and resulting from
the negligence or willful act of Landlord, its employees, agents, servants or
licensees, or (2) resulting from the failure of Landlord to perform its
obligations under this Lease; provided, however, Landlord's obligations under
this section shall not apply to injury or damage to the extent resulting from
the negligence or willful act of Tenant, or its respective agents or employees.

SECTION 15.2. RIGHT OF RECOVERY. Neither Landlord nor Tenant shall be liable to
the other or to an insurance company (by way of subrogation or otherwise)
insuring the other party for any loss or damage to any building, structure or
other tangible property, or any resulting loss of income, or losses under
worker's compensation laws and benefits, even though such loss or damage might
have been occasioned by the negligence of such party, its agents or employees,
to the extent such loss or damage is covered by insurance benefiting the party
suffering such loss or damage or was required to be covered by insurance
pursuant to this Lease.

SECTION 15.3. INDEPENDENT OBLIGATIONS; FORCE MAJEURE. Landlord and/or Tenant
shall not have any liability whatsoever to the other party, because: (a) one
party is unable to fulfill, or is delayed in fulfilling, any of its obligations
under this Lease by reason of strike, other labor trouble, governmental action
or inaction, controls or shortages of fuel, supplies, labor or materials, acts
of God or any other cause, whether similar or dissimilar, beyond the party's
reasonable control assuming prudent practices. Landlord shall not have any
liability for any failure or defect in the supply, quantity or character of
electricity, HVAC or water furnished to the Premises, by reason of any
requirement, act or omission of the public utility or others serving the
Building with electric energy, steam, oil, gas or water. No such Force Majeure
shall excuse Tenant's nonpayment of Rent or other charges due under this Lease
as and when the same are due.

ARTICLE 16: DEFAULT

SECTION 16.1. EVENTS OF DEFAULT. Tenant shall be in default under this Lease if
any one or more of the following events shall occur:

         16.1.1 Tenant shall fail to pay any installment of the Rent or any
other expenses called for hereunder as and when the same shall become due and
payable within ten (10) days after same is due and payable; or

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<PAGE>   17

         16.1.2 Tenant shall default in the performance of or compliance with
any of the other terms or provisions of this Lease, and such default shall
continue for a period of thirty (30) days after the giving of written notice
thereof from Landlord to Tenant, or, in the case of any such default which
cannot, after making a diligent effort, be cured within said thirty (30) days,
Tenant shall fail to proceed within said thirty (30) day period to cure such
default and thereafter to prosecute the curing of same with all due diligence
(it being intended that as to a default not susceptible of being cured with due
diligence within such period of thirty (30) days, the time within which such
default may be cured shall be extended for such period as may be necessary to
permit the same to be cured with bona fide due diligence). Notwithstanding the
foregoing, if at any time Landlord determines that such default may have a
material adverse effect on the Property, then Landlord shall notify Tenant and
the cure period shall terminate and Landlord may pursue its remedies for said
default as provided in Article 17; or

         16.1.3 Tenant shall assign, transfer, mortgage or encumber this Lease
or sublet the Premises in a manner not permitted by Article 12; or

         16.1.4 Tenant shall file a voluntary petition in bankruptcy or any
Order for Relief be entered against it, or shall file any petition or answer
seeking any arrangement, reorganization, composition, re-adjustment or similar
relief under any present or future bankruptcy or other applicable law, or shall
seek or consent to or acquiesce in the appointment of any trustee, receiver, or
liquidator of Tenant of all or any substantial part of Tenant's properties; or

         16.1.5 If any creditor of Tenant shall file a petition in bankruptcy
against Tenant or for reorganization of Tenant, under state or federal law, and
if such petition is not discharged within ninety (90) days after the date on
which it is filed.

         16.1.6 Tenant shall vacate or abandon the Premises.

SECTION 16.2. HOLDING OVER. If Tenant does not vacate the Premises upon the
expiration or earlier termination of this Lease, Tenant will be a tenant at
sufferance for the holdover period and all of the terms and provisions of this
Lease will be applicable during that period, except that Tenant will pay
Landlord (in addition to Additional Rent and any other sums payable under this
Lease) as Base Rent for the period of such holdover an amount equal to one and
one-half (1.5) times the Base Rent which would have been payable by Tenant had
the holdover period been a part of the original term of this Lease (without
waiver of Landlord's right to recover damages as permitted by law). Upon the
expiration or earlier termination of this Lease, Tenant agrees to vacate and
deliver the Premises, and all keys thereto, to Landlord upon delivery to Tenant
of notice from Landlord to vacate. No holding over by Tenant, whether with or
without the consent of Landlord will operate to extend the term of this Lease.
Tenant indemnifies Landlord against all claims made by any tenant or prospective
tenant against Landlord resulting from delay by Landlord in delivering
possession of the Premises to such other tenant or prospective tenant due to
Tenant's failure to timely vacate the Premises.

ARTICLE 17: REMEDIES/DAMAGES

In the event Tenant is in default under this Lease as provided in Article 16,
Landlord may elect, in addition to any and all remedies provided by Florida Law,
any or all of the following remedies:

SECTION 17.1. TERMINATION OF LEASE. By written notice to Tenant, designate a
date upon which the Lease shall terminate ("Termination Date"), and thereupon,
on the Termination Date, this Lease and all rights of Tenant hereunder shall
terminate. Such termination by Landlord shall not affect the obligations of
Tenant arising under the Lease prior to the Termination Date or the other
remedies of Landlord.

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<PAGE>   18

SECTION 17.2. TERMINATION OF TENANT'S POSSESSION. Landlord may elect to
terminate Tenant's possessory rights, without terminating the Lease, and upon
such election, Tenant shall surrender the Premises to Landlord, and Landlord, at
any time after such termination, may, without further notice, re-enter and
repossess the Premises without being liable to any prosecution or damages
therefore, and no person claiming through or under Tenant or by virtue of any
statute or of any order of any court shall be entitled to possession of the
Premises. At any time or from time to time after any such termination of
Tenant's possession, Landlord may relet the Premises or any part thereof, in the
name of Landlord or otherwise, for such term or terms and on such conditions as
Landlord, in its sole discretion, may determine, and may collect and receive the
rents therefore. Landlord shall not be responsible or liable for any failure to
relet the Premises. The termination of Tenant's possession shall not relieve
Tenant of its liability and obligations under this Lease, including the
obligation to pay Rent, and such liability and obligations shall survive any
such termination. Any Rent or other monetary obligation of Tenant that has been
abated, deferred or forgiven by Landlord in this Lease or any amendment thereto,
and the cost of all Tenant Improvements provided or paid for by Landlord
pursuant to Section 7.1 above, shall immediately become due and payable upon the
occurrence of an Event of Default by Tenant under this Lease. If Landlord, at
its option shall relet the Premises during said period, Landlord shall credit
Tenant with the net rents received by Landlord from such reletting, such net
rents to be determined by first deducting from the gross rents, as and when
received by Landlord, the reasonable expenses incurred or paid by Landlord in
terminating this Lease and in securing possession thereof, as well as the
expenses of reletting, including, without limitation, the alteration and
preparation of the Premises for new tenants, brokers' commissions, attorneys'
fees and all other expenses properly chargeable against the Premises and the
rental therefrom. It is hereby understood that any such reletting may be for a
period shorter or longer than the remaining Term of this Lease but in no event
shall Tenant be entitled to receive any excess of such net rents over the sum
payable by Tenant to Landlord hereunder, nor shall Tenant be entitled in any
suit for the collection of damages pursuant hereto to a credit in respect of any
net rents from a reletting, except to the extent that such rents are actually
received by Landlord.

SECTION 17.3. DAMAGES. Landlord may elect, whether this Lease or Tenant's
possession is terminated or not, to recover damages from the Tenant in
accordance with either of the following provisions:

         17.3.1 The present value of the remaining amount of the Rent which
would become due and payable during the remainder of the Term of this Lease, in
which event Tenant agrees to pay the same at once, together with all Rent
theretofore due, at Landlord's address as provided herein; provided, however,
that such payment shall not constitute a penalty or forfeiture or liquidated
damages, but shall constitute payment in advance of the Rent for the remainder
of the Term. Such present value shall be determined utilizing a discount rate of
six percent (6%). The acceptance of such payment by Landlord shall not
constitute a waiver of any failure of Tenant thereafter occurring to comply with
any term, provision, condition or covenant of this Lease. If Landlord elects the
remedy given in this Section 17.3.1, then same shall be Landlord's sole remedy
for such default.

Lawsuits for the recovery of such damages, or any installments thereof, may be
brought by Landlord from time to time at its election, and nothing contained
herein shall be deemed to require Landlord to postpone suit until the date when
the Term of this Lease would have expired, nor limit or preclude recovery by
Landlord against Tenant of any sums or damages which, in addition to the damages
particularly provided above, Landlord may lawfully be entitled by reason or any
default hereunder on the part of Tenant. All remedies of Landlord provided for
herein, or otherwise at law or in equity, shall be cumulative and concurrent.

ARTICLE 18: EMINENT DOMAIN

SECTION 18.1. SUBSTANTIAL TAKING. If all or a substantial part of the Property
are taken for any public or quasi-public use under any governmental
requirements, or by right of eminent domain or by purchase in lieu

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<PAGE>   19

thereof and such taking would prevent or materially interfere with the use of
the Premises for the purpose for which it is then being used, then, at the
option of either Landlord or Tenant, this Lease will terminate and the Rent and
all other charges will be abated during the unexpired portion of this Lease
effective on the date physical possession is taken by the condemning authority.

SECTION 18.2. PARTIAL TAKING. Following a taking of any part of the Property for
any public or quasi-public use under any governmental requirements or by right
of eminent domain or by purchase in lieu thereof, if this Lease is not
terminated as provided in Section 18.1 above, then subject to the prior rights
of a Superior Mortgage, Landlord will, to the extent of condemnation proceeds
(excluding any proceeds for land) actually received by Landlord, restore the
Property and other improvements on the Property to the extent necessary to make
the Premises reasonably tenantable.

         18.2.1 The Base Rent and all other charges payable under this Lease
during the period for which the Premises are untenantable will be reduced to an
amount determined by multiplying the Rent that otherwise would be payable but
for this provision by the ratio that part of the Premises not rendered
untenantable bears to the entire of the Premises prior to the taking.

         18.2.2 If Landlord fails to substantially complete those portions of
the restoration which are Landlord's obligations hereunder, within 180 working
days of the date of the physical possession by the condemning authority, Tenant
may at its option terminate this Lease by delivering written notice of
termination to Landlord.

         18.2.3 Tenant, at Tenant's sole cost and expense shall proceed with
reasonable diligence to restore the remaining parts of the Premises which are
deemed Landlord's Property and Tenant's Property pursuant hereto, to
substantially their former condition to the extent feasible, subject to
reasonable changes which Tenant shall deem desirable and Landlord shall approve.
Such work by Tenant shall be deemed alterations and subject to the provisions of
this Lease for alterations.

SECTION 18.3. CONDEMNATION PROCEEDS. All compensation awarded for any taking (or
the proceeds of private sale in lieu thereof), whether for the whole or a part
of the Premises, will be the property of Landlord (except Tenant's interest in
the Premises); provided, however, Landlord will have no interest in any award
made to Tenant for loss of business or for taking of Tenant's fixtures and other
property, moving expenses, leasehold improvements paid for by Tenant, within the
Premises if a separate award for such items is made to Tenant.

ARTICLE 19: QUIET ENJOYMENT

Landlord agrees that Tenant, upon paying all Rent and all other charges herein
provided for and observing and keeping the covenants, agreements, terms and
conditions of this Lease and the rules and regulations of Landlord affecting the
Premises on its part to be performed, shall lawfully and quietly hold, occupy
and enjoy the Premises during the Term hereof, expressly subject to the terms,
limitations and conditions contained in this Lease.

ARTICLE 20: SUBORDINATION AND ATTORNMENT

SECTION 20.1. SUBORDINATION, ATTORNMENT AND NON-DISTURBANCE. This Lease, and all
rights of Tenant hereunder, are and shall be subordinate to any mortgage,
long-term lease such as a master lease, ground lease, deed of trust or other
encumbrance, whether now of record or recorded after the date of this Lease,
affecting all or any part of the Property. Such subordination is self-operative
without any further act of Tenant. Any mortgage, long-term lease such as a
master lease, ground lease, deed of trust or other encumbrance to which

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<PAGE>   20

this Lease is subject and subordinate is hereinafter referred to as a "Superior
Mortgage", and the holder of a Superior Mortgage is hereinafter referred to as a
"Superior Mortgagee". If any Superior Mortgagee shall succeed to the rights of
Landlord hereunder, whether through deed-in-lieu of foreclosure, foreclosure
action or delivery of a new lease or deed, then, at the request of such party
(hereinafter referred to as "Successor Landlord"), Tenant shall attorn to and
recognize such Successor Landlord as Tenant's Landlord under this Lease and
shall promptly execute and deliver any instrument such Successor Landlord may
reasonably request to evidence such attornment subject to reasonable approval by
Tenant. Upon such attornment, this Lease shall continue in full force and effect
as a direct Lease between Successor Landlord and Tenant, upon all terms,
conditions, and covenants as set forth in this Lease, except that the Successor
Landlord shall not: (a) be liable for any previous act or omission of Landlord
under this Lease; (b) be subject to any offset; or (c) be bound by any previous
modification of this Lease or by any previous prepayment, unless such
modification or prepayment shall have been previously approved in writing by
such Superior Mortgagee if such approval was required. Further, upon such
attornment, Landlord shall be released from any future obligation hereunder.
Tenant shall, within fifteen (15) days of a request by Landlord, execute and
deliver any documents or instruments that may be required by Superior Mortgagee
or Landlord to confirm such subordination or attornment. So long as Tenant is
not in default under this Lease, Tenant's possession of the Premises and
Tenant's rights and privileges under this Lease shall not be diminished or
interfered with by any Successor Landlord during the term of this Lease. This
particular provision shall be binding upon any assigns or successors in interest
to Landlord. Notwithstanding the subordination and attornment of this Lease to
any Superior Mortgagee which presently exists or which may hereafter be made, or
to any renewal, modification, replacement or extension hereafter of any Superior
Mortgagee, such Superior Mortgagee, by separate recordable agreement, shall
agree that so long as this Lease is in effect and not in default, Tenant's
leasehold interest under this Lease shall not be terminated or disturbed. Such
non-disturbance agreement shall also include subordination and attornment
provisions satisfactory to Superior Mortgagees.

SECTION 20.2. NOTICE TO LANDLORD AND SUPERIOR MORTGAGEE. If any act or omission
of Landlord would give Tenant the right, immediately or after the lapse of a
period of time, to cancel this Lease or to claim a partial or total eviction,
Tenant shall not exercise such right: (a) until it has given written notice of
such act or omission to Landlord and any Superior Mortgagee; and (b) until a
reasonable period of time for remedying such act or omission shall have elapsed
following the giving of such notice and following the time when such Superior
Mortgagee shall have become entitled under such Superior Mortgage to remedy the
same. In the event any Superior Mortgagee shall request reasonable modifications
to this Lease as to term, renewal or financial obligations, as a condition to
financing or refinancing, Tenant shall not unreasonably withhold, delay or defer
in providing its consent thereto.

ARTICLE 21: LANDLORD'S RIGHT OF ACCESS

SECTION 21.1. ACCESS FOR MAINTENANCE AND REPAIR. Except for the space within the
inside surfaces of all walls, hung ceilings, floors, windows, and doors bounding
the Premises, all of the Building including, without limitation, exterior walls,
core interior walls and doors and any core corridor entrance, any terraces or
roofs adjacent to the Premises, and any space in or adjacent to the Premises
used for shafts, stacks, pipes, conduits, fan rooms, ducts, electric or other
utilities, sinks, or other facilities of the Building, and the use thereof, as
well as access thereto throughout the Premises for the purposes of operation,
maintenance, decoration and repair, are reserved to Landlord. Landlord reserves
the right and Tenant shall permit Landlord, to install, erect, use and maintain
pipes, ducts and conduits in and through the Premises. Landlord shall be allowed
to take all materials into and upon the Premises that may be required in
connection therewith, without any liability to Tenant and without any reduction
of Tenant's covenants and obligations hereunder. Landlord and its agents shall
have the right to enter upon the Premises for the purpose of making any repairs
therein or thereto which shall be considered necessary or desirable by Landlord,
in such a manner as not to unreasonably

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<PAGE>   21

interfere with Tenant in the conduct of Tenant's business on the Premises; and
in addition, Landlord and its agents shall have the right to enter the Premises
at any time in cases of emergency.

SECTION 21.2. ACCESS FOR INSPECTION AND SHOWING. Upon reasonable notice to
Tenant, during normal business hours, in a manner that does not interfere with
Tenant's use of the Premises, Landlord and its agents shall have the right to
enter and/or pass through the Premises at any time to examine the Premises and
to show them to prospective purchasers, mortgagees or lessees of the Building.
During the period of six (6) months prior to the Expiration Date of this Lease,
Landlord and its agents may exhibit the Premises to prospective tenants.

SECTION 21.3. LANDLORD'S ALTERATIONS AND IMPROVEMENTS. Landlord reserves the
right to make such changes, alterations, additions, and improvements in or to
the Building and the fixtures and equipment thereof, as well as in or to the
street entrances, doors, halls, passages, elevators, escalators and stairways
thereof, and other public portions of the Building and the Property, as Landlord
shall deem necessary or desirable, and no such alterations or changes shall be
deemed a breach of Landlord's covenant of quiet enjoyment or a constructive
eviction.

ARTICLE 22: SIGNS AND OBSTRUCTION

SECTION 22.1. SIGNS. Tenant shall not place or maintain or cause to be placed or
maintained upon any exterior door, roof, wall or window of the Premises or the
Building, any sign, awning, canopy or advertising matter of any kind, nor place
or maintain any decoration, lettering or advertising matter on the glass of any
window or door of the Premises, except as previously approved in writing by
Landlord, in Landlord's sole discretion. Tenant shall not place or maintain any
freestanding sign within or upon the Property, without first obtaining
Landlord's express prior written consent. No interior or exterior sign visible
from the exterior of the Building shall be permitted. Tenant further agrees to
maintain any such signage approved by Landlord in good condition and repair at
all times and to remove the same at the end of the Term of this Lease if
requested by Landlord. Upon removal thereof, Tenant agrees to repair any damage
to the Property caused by such installation and/or removal. The Building
standard interior and exterior signage identifying Tenant's office shall be
provided by Landlord, at Landlord's expense. Tenant, at Tenant's sole cost and
expense but subject to Landlord's reasonable approval, shall have the exclusive
right for facia signage on the exterior of the Building.

SECTION 22.2. OBSTRUCTION. Tenant shall not obstruct the corridors, elevators,
stairs, common areas, sidewalks, parking lots or other public portions of the
Property in any manner whatsoever.

ARTICLE 23: RENEWALS AND PURCHASE OPTIONS

SECTION 23.1. RIGHT OF FIRST REFUSAL TO LEASE SPACE. Provided Tenant is not in
default hereunder, if during the term of this Lease, Landlord shall first offer
to rent space in the Building which is available for rent to Tenant on the same
terms and conditions as this Lease. Landlord shall communicate the existence of
such offer to Tenant in writing and Tenant shall have ten (10) business days
within which to accept or reject such offer. If Tenant does not accept such
offer within said ten (10) business day period, then Tenant shall be deemed to
have forever waived its right of first refusal as to such space and Landlord
shall be free to lease such space as Landlord deems appropriate.

SECTION 23.2. RENEWAL OPTION. Provided Tenant is not in default hereunder,
Tenant shall have the option to renew this Lease for two (2) additional terms of
three (3) years ("Renewal Term") which Renewal Term shall commence on the date
following the Expiration Date. The terms, covenants and conditions during the

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<PAGE>   22

initial Term (the "Initial Term"), shall be projected and carried over into
Renewal Term, except as specifically set forth hereinafter.

         23.2.1 The Base Rent during the Renewal Term shall be the then Market
Rent (as defined in Section below).

         23.2.2 "Market Rent" shall mean the "fair market rent" for the
Premises, as of the commencement date of the renewal Term (the "Determination
Date"), based upon the rents generally in effect for comparable office space in
the area in which the Premises is located. Market Rent (for the purposes of
determining the Base Rent during the applicable Renewal Term) shall be
determined on what is commonly known as "gross" basis; that is, in computing
Market Rent, it shall be assumed that all real estate taxes and expenses for
customary services are included in such Market Rent and are not passed through
to the Tenant as separate additional charges. The term "fair market rent" shall
mean the annual amount per rentable square foot that a willing, comparable,
non-equity, non-renewal, non-expansion new tenant would pay, and a willing,
landlord of a comparable first-class office building in the Jacksonville,
Florida area would accept at arm's length, giving appropriate consideration to
annual rental rates per rentable square foot, the type of escalation clauses
(including, but without limitation, operating expenses, real estate taxes, CPI),
the extent of liability under the escalation clauses (e.g., whether determined
on a "net lease" basis or by increases over a particular base year or base
dollar amount), length of the term, size, location and condition of premises
being leased, and other generally applicable terms and conditions of tenancy for
the space in question.

         23.2.3 In the event Landlord and Tenant are unable to agree on the Fair
Market Rent for the Renewal Term within fifteen (15) days of Tenant's exercise
of such option, then, the fair market rental value of the Premises will be
determined within seven (7) days after the expiration of the fifteen (15) day
period set forth above, Landlord and Tenant will each appoint a real estate
appraiser with at least five (5) years' full-time commercial appraisal
experience in the greater Jacksonville area. The two (2) appraisers appointed
pursuant to this paragraph will meet promptly and attempt to elect a third
appraiser meeting the qualifications stated in this paragraph. If they are
unable to agree on the third appraiser, either Landlord or Tenant, by giving ten
(10) days' prior notice to the other, can apply to the then-presiding judge of
the County Court for the selection of a third appraiser who meets the
qualifications stated in this paragraph. Landlord and Tenant shall each pay
one-half (1/2) of the cost of appointing the third appraiser and of paying the
third appraiser's fee. The third appraiser, however selected, must be a person
who has not previously acted in any capacity for either Landlord or Tenant.
Within thirty (30) days after the selection of the third appraiser, the third
appraiser shall set the then-fair market rental value of the Premises. If either
Landlord or Tenant does not appoint an appraiser within ten (10) days after the
other has given notice of the name of its appraiser, the single appraiser
appointed will be the sole appraiser and will set the then-fair market rental
value of the Premises. As used herein, the "then-fair market rental value of the
Premises" means what a Landlord under no compulsion to lease the Premises and a
tenant under no compulsion to lease the Premises would determine as Rent for the
Renewal Term, as of the commencement of the Renewal Term, taking into
consideration the uses permitted under this Lease, the quality, size, design and
location of the Premises, and the rent for comparable buildings located in the
greater Jacksonville Market. Tenant shall have a period of fifteen (15) days
from receipt of the determination of "Fair Market Rent" to accept the same and
ratify the extension of the Lease Term. Unless Tenant shall ratify and accept
"Fair Market Rent" as established pursuant to this Section , Tenant shall be
deemed to have abandoned the Renewal Option and this Lease shall terminate on
the Expiration Date as scheduled.

SECTION 23.3. OPTION TO PURCHASE. At anytime during the 8th through the 10th
years of the Lease Term (the "Purchase Option Period"), Tenant have the right
and option to purchase the Building (as the same is more particularly described
on EXHIBIT "A") (the "Purchase Option") upon the following terms and conditions:

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<PAGE>   23

         23.3.1 The Purchase Option shall continue in effect only so long as
there shall exist no uncured Event of Default under the terms of this Lease and
shall expire automatically and irrevocably at the end of the Purchase Option
Period.

         23.3.2 The Purchase Option must be exercised, if at all, in writing and
delivered during the Purchase Option Period to the Landlord and accompanied by
evidence of Tenant's delivery to Ford, Jeter, Bowlus & Duss, P.A., as Escrow
Agent the sum of TWENTY FIVE THOUSAND DOLLARS ($25,000.00) as a binder deposit
(collectively, "Tenant's Notice of Exercise").

         23.3.3 When exercised, the Purchase Option shall become a binding
contract of purchase and sale between the parties which is specifically
enforceable by both Landlord and Tenant.

         23.3.4 Tenant shall pay the costs of obtaining title and survey
evidence and all costs in conjunction with Tenant's investigation into the
suitability of the property, cost of recording the Special Warranty Deed, costs
attributable to Tenant's financing and title insurance endorsements required by
Tenant's lender.

         23.3.5 Landlord shall pay the cost of an Owner's Policy of title
insurance through an agent selected by Landlord and the documentary stamps due
on the special warranty deed, and the cost of all releases and satisfactions
necessary to convey marketable, fee simple title to the property subject only to
leases approved by Tenant, taxes for the then current year and easements
approved by Tenant.

         23.3.6 Each party shall bear its own respective attorney fees and
costs.

         23.3.7 Closing shall take place at Landlord's and Tenant's mutual
agreement.

         23.3.8 The purchase price shall be equal to the Fair Market Value of
the Property as set forth below (the "Option Purchase Price"), subject to
customary prorations and adjustments.

         23.3.9 "Fair Market Value of the Property" shall mean that price as of
the date on which Tenant issues Tenant's Notice of Exercise that a willing,
comparable, unrelated third party purchaser would pay, and a willing, owner of a
comparable first-class office building in the Jacksonville, Florida area would
accept at arm's length for the Building. The Fair Market Value of the Property
will be determined based upon the sales prices generally in effect for
comparable real property in the area in which the Building is located and shall
be determined with reference to the amount per square foot. giving appropriate
consideration to assessed values, annual rental rates per rentable square foot,
income stream, size, location and condition of the building being sold, and
other generally applicable terms and conditions of purchase and sale for the
real property in question.

         23.3.10 In the event Landlord and Tenant are unable to agree on the
Fair Market Value of the Property within fifteen (15) days of Tenant's Notice of
Exercise, then, the Fair Market Value of the Property will be determined within
seven (7) days after the expiration of said fifteen (15) day period. Landlord
and Tenant will each appoint a real estate appraiser with at least five (5)
years' full-time commercial appraisal experience in the greater Jacksonville
area. The two (2) appraisers appointed pursuant to this paragraph will meet
promptly and attempt to elect a third appraiser meeting the qualifications
stated in this paragraph. If they are unable to agree on the third appraiser,
either Landlord or Tenant, by giving ten (10) days' prior notice to the other,
can apply to the then-presiding judge of the County Court for the selection of a
third appraiser who meets the qualifications stated in this paragraph. Landlord
and Tenant shall each pay one-half (1/2) of the cost of appointing the third
appraiser and of paying the third appraiser's fee. The third appraiser, however
selected, must be a person who has not previously acted in any capacity for
either Landlord or Tenant. Within thirty (30) days after the selection of the
third appraiser, the third appraiser shall set the then

                                       21
<PAGE>   24

Fair Market Value of the Property. If either Landlord or Tenant does not appoint
an appraiser within ten (10) days after the other has given notice of the name
of its appraiser, the single appraiser appointed will be the sole appraiser and
will set the then Fair Market Value of the Property.

         23.3.11 Unless Tenant shall ratify and accept the established "Fair
Market Value of the Property" as established pursuant to this Article 23, Tenant
shall be deemed to have abandoned the Purchase Option, which shall thereafter be
void and of no further force or effect, provided however that the Lease shall
continue in full force and effect as set forth herein.

SECTION 23.4. THIRD PARTY OFFER. Notwithstanding anything contained herein to
the contrary, upon receiving a bona fide written offer of purchase for the
Property from a third party offeror within the Purchase Option Period, deemed
acceptable to Landlord, Landlord shall deliver a copy of same to Tenant. Tenant
shall have twenty (20) days from delivery of said offer by Landlord to exercise
its Option to purchase on the terms and conditions set forth in the third party
offer (except that such purchase and sale shall be all-cash, as-is and close
within thirty (30) days of Tenant's acceptance of the same), said exercise to be
by Tenant's providing Landlord with Tenant's Notice of Exercise as set forth in
Section 23.3.2 above.

         23.4.1 In the event Tenant shall fail to exercise the Purchase Option,
Landlord shall be free to consummate the sale in accordance with the
then-pending contract and Tenant's option to purchase pursuant hereto shall
terminate upon the closing of said transaction.

         23.4.2 In the event Landlord shall not consummate the sale to the third
party offeror, Tenant's Option pursuant to Section 23.3 above shall survive and
continue in full force and effect until the expiration of the Purchase Option in
accordance with the provisions of this Article .

ARTICLE 24: NOTICES

         SECTION 24.1. NOTICES. All notices, requests, demands, and other
communications which are required or permitted to be given under this Lease
shall be in writing and shall be given to the party at its address or telecopy
number set forth below. Each notice shall be deemed to have been duly given and
received : (a) as of the date and time the same are personally delivered with a
receipted copy, (b) if given by telecopy, when the telecopy is transmitted to
the party's telecopy number specified below and confirmation of complete receipt
is received by that transmitting party during normal business hours or the next
Business Day if not confirmed during normal business hours; (c) if delivered by
U.S. Mail, within three (3) days after depositing with the United States Postal
Service, postage prepaid by certified mail, return receipt requested, or (d) if
given by a nationally recognized or reputable overnight delivery service within
one (1) day after deposit with such delivery service.

                  AS TO LANDLORD:      PONTE VEDRA MANAGEMENT GROUP, LTD.
                                       5000 Sawgrass Village Circle Suite 28
                                       Ponte Vedra Beach, Florida 32082
                                       Telefax (904) 273-6068

                  With a copy to       John S. Duss, IV, Esq.
                                       Ford, Jeter, Bowlus & Duss, P.A.
                                       10110 San Jose Blvd.
                                       Jacksonville, FL 32257
                                       Telefax No.: (904) 268-8930

                                       22
<PAGE>   25

                  AS TO TENANT:        Orthodontic Centers of America, Inc.
                                       5000 Sawgrass Village Circle Suite 28
                                       Ponte Vedra Beach, Florida 32082
                                       Telefax No.:
                                                    ----------------------------

ARTICLE 25: MISCELLANEOUS

SECTION 25.1. ENVIRONMENTAL INDEMNITY. Tenant agrees to indemnify and hold
Landlord harmless from and against any and all loss, claim, liability, damages,
injuries to person, property, or natural resources, cost, expense, action or
cause of action, arising in connection with the release or presence of any
"Hazardous Substances" at the Property, through the acts of Tenant, its
officers, employees, contractors, agents or invitees, whether or not foreseeable
and regardless of the source of such release or the circumstances attendant
thereto. Landlord agrees to indemnify and hold Tenant harmless from and against
any and all loss, claim, liability, damages, injuries to person, property, or
natural resources, cost, expense, action or cause of action, arising in
connection with the release or presence of any "Hazardous Substances" at the
Property, through the acts of Landlord, its officers, employees, contractors,
agents or invitees, whether or not foreseeable and regardless of the source of
such release or the circumstances attendant thereto. The foregoing indemnities
include, without limitation, all costs in law or in equity of removal,
remediation of any kind, and disposal of such Hazardous Substances; all costs of
determining whether the Property is in compliance and to cause the Property to
be in compliance with all applicable environmental laws; all costs associated
with claims for damages to persons, property, or natural resources; and
reasonable attorneys' and consultant's fees and costs, whether or not litigation
is instituted. For the purposes of the definition, Hazardous Substances
includes, without limitation, any toxic or hazardous wastes, pollutants or
substances, including, without limitation, asbestos, PCB's, petroleum products
and by-products, substances defined or listed as "hazardous substances" or
"toxic substances" or similarly identified in or pursuant to the Comprehensive
Environmental Response, Compensation and Liability Act of 1980, as amended, 42
U.S.C. Section 9601 et. seq., or as identified in or pursuant to the Hazardous
Materials Transportation Act 49 U.S.C. Section 1802 et. seq.

SECTION 25.2. RADON GAS. Pursuant to Florida Statutes, Section 404.056(7), the
following disclosure is required by law: Radon is a naturally occurring
radioactive gas that, when it has accumulated in a building in sufficient
quantities, may present health risks to persons who are exposed to it over time.
Levels of Radon that exceed federal and state guidelines have been found in
buildings in Florida. Additional information regarding Radon and radon testing
may be obtained from your county public health unit.

SECTION 25.3. BROKER COMMISSION. Each party represents and warrants to the other
neither has (a) employed a real estate broker; or (b) entered into any agreement
or taken any action which would result in a commission, finder's fee, or other
similar charge being payable on account of the sale of the Property. Each party
hereto agrees to indemnify and hold harmless the other against any other cost or
expense, including reasonable attorney's fees and costs incurred by a party by
reason of a claim for a brokerage commission, brokerage fee, or brokerage charge
arising out of actions of the other indemnifying party, which agreement shall
survive the termination or expiration of this Lease or the Closing of any
exercise of the Purchase Option.

SECTION 25.4. ESTOPPEL CERTIFICATES. Each party agrees, at any time and from
time to time as reasonably requested by the other party, to execute and deliver
to the other a statement certifying that this Lease is unmodified and in full
force and effect (or if there have been modifications, that the same are in full
force and effect as modified and stating the modifications), certifying the
dates to which the Base Rent and Additional Rent have been paid, stating whether
or not the other party is in default in performance of any of its obligations
under this Lease, and, if so, specifying each such default, and stating whether
or not any event has occurred which, with the giving of notice or passage of
time, or both, would constitute such a default, and, if

                                       23
<PAGE>   26

so, specifying each such event. Tenant also shall include in any such statements
such other information concerning this Lease as Landlord may reasonably request.
A form of such Estoppel Certificate is attached hereto as EXHIBIT "B". In the
event either party fails to comply with this Section, such failure shall
constitute a material breach of the Lease.

SECTION 25.5. NO RECORDATION. This Lease shall not be recorded by Tenant. Any
attempted recordation by Tenant shall entitle Landlord to the remedies provided
for Tenant's default. At the request of Landlord, Tenant shall promptly execute,
acknowledge and deliver to Landlord a Memorandum of Lease with respect to this
Lease, and a Memorandum of Modification of Lease with respect to any
modification of this Lease, prepared by Landlord and sufficient for recording.
Such Memorandum shall not be deemed to change or otherwise affect any of the
obligations or provisions of this Lease.

SECTION 25.6. GOVERNING LAW. This Lease shall be governed by and construed in
accordance with the laws of the State of Florida, and in the event litigation
arises between the parties in connection with any of the terms of this Lease,
venue shall lie in the Circuit Court in St. Johns County, Florida. If any
provision of this Lease or the application thereof to any person or circumstance
shall, for any reason and to any extent, be invalid or unenforceable, the
remainder of this Lease shall remain in full force and effect. The table of
contents, captions, headings and titles in this Lease are solely for convenience
of reference and shall not affect its interpretation. This Lease shall be
construed without regard to any presumption or other rule requiring construction
against the party causing this Lease to be drafted. Each covenant, agreement,
obligation, or other provision of this Lease on Tenant's part to be performed,
shall be deemed and construed as a separate and independent covenant of Tenant,
not dependent on any other provision of this Lease. All terms and words used in
this Lease, regardless of the number or gender in which they are used, shall be
deemed to include any other number and any other gender, as the context may
require.

SECTION 25.7. NO PARTNERSHIP OR JOINT VENTURE. Nothing contained in this Lease
will be deemed or construed to create a partnership or joint venture between
Landlord and Tenant, or to create any other relationship between the parties
other than that of Landlord and Tenant.

SECTION 25.8. APPROVAL BY SUPERIOR MORTGAGEE. If required by a Superior
Mortgagee, this Lease shall not become binding upon Landlord until approval of
the Lease by Landlord's Superior Mortgagee for the Property, notice of which
requirement by a Superior Mortgage is given to Tenant at the time the same is
executed by Landlord.

SECTION 25.9. FINANCIAL STATEMENTS. Prior to the Commencement Date, and from
time to time thereafter, Tenant shall provide Landlord, upon written notice
including reason for such request, its most current and complete financial
statement including, but not limited to, its balance sheet and profit and loss
statement, certified by an officer of Tenant. Tenant shall provide these
statements to Landlord upon thirty (30) days written notice from Landlord.

SECTION 25.10. CAPACITY TO EXECUTE LEASE. If Tenant is other than a natural
person, Tenant represents that it is legally constituted, in good standing and
authorized to conduct business in the State of Florida. Tenant further
represents that the person who is executing this Lease on its behalf has the
full power and authority to perform such execution and deliver the Lease to
Landlord, and that upon such execution and delivery, the Lease shall be valid
and binding upon Tenant in accordance with its respective terms and conditions.
To further evidence the foregoing, upon request by Landlord, Tenant shall
deliver to Landlord an appropriate corporate or partnership resolution
specifying that the signatory to the Lease has been duly authorized to execute
same on behalf of Tenant, and a Certificate of Good Standing from the State of
Florida if Tenant is anything other than a natural person or a general
partnership.

                                       24
<PAGE>   27

SECTION 25.11. EXCULPATION OF LANDLORD. Landlord's obligations and liability to
Tenant with respect to this Lease shall be limited solely to Landlord's interest
in the Property, and neither Landlord nor any of the partners of Landlord, nor
any officer, director, or shareholder of any of the partners of Landlord, shall
have any personal liability whatsoever with respect to this Lease.

SECTION 25.12. WAIVER OF TRIAL BY JURY. IT IS MUTUALLY AGREED BY AND BETWEEN
LANDLORD AND TENANT THAT THE RESPECTIVE PARTIES HERETO SHALL, AND THEY HEREBY
DO, WAIVE TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM BROUGHT BY
EITHER OF THE PARTIES AGAINST THE OTHER ON ANY MATTER ARISING OUT OF OR IN ANY
WAY CONNECTED WITH THIS LEASE, THE RELATIONSHIP OF LANDLORD AND TENANT OR
TENANT'S USE OR OCCUPANCY OF THE PREMISES, OR BY ANY COURSE OF CONDUCT OR COURSE
OF DEALING.

SECTION 25.13. ENTIRE AGREEMENT. This Lease constitutes the entire understanding
between the parties and shall bind the parties, their successors and assigns. No
representations, except as herein expressly set forth, have been made by either
party to the other, and this Lease cannot be amended or modified except by a
writing signed by Landlord and Tenant.

                                       25
<PAGE>   28

     IN WITNESS WHEREOF, the parties have executed this Lease the day and year
first above written.

Signed, sealed and delivered in the presence of:

     /s/ Christy Miller              ORTHODONTIC CENTERS OF AMERICA, INC.
---------------------------------
     Christy Miller
     Print Name

     /s/ David J. Schulte            By:  /s/ Michael C. Johnsen
---------------------------------       ----------------------------------------
     David J. Schulte, MAI                Michael C. Johnsen
     Vice President of Real Estate        Its Chief Operating Officer
     Print Name                           Print Name

     /s/ H. Hope Hana                PONTE VEDRA MANAGEMENT GROUP, LTD.,
---------------------------------    a Florida limited partnership
     H. Hope Hana
     Print Name

     /s/ Lauri Vickery               By: PVM Group, Inc., a Florida corporation,
---------------------------------    its corporate general partner
     Lauri Vickery
     Print Name

                                     By:   /s/ Gasper Lazzara, Jr.
                                         ---------------------------------------
                                           Gasper Lazzara, Jr.
                                           Its President
                                           Print Name

                                       26

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