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                                                                    EXHIBIT 10.7

                                LEASE AGREEMENT
                                ---------------


     THIS LEASE AGREEMENT, made this 3/rd/ day of August, 1999, by and between
CENTURY 2000 PARTNERS, LLP, a Limited Liability Partnership ("Landlord") and A
BUSINESS CONFERENCE CALL, INC., a Minnesota Corporation ("Tenant");

                               WITNESSETH THAT:

     1.   DEFINITIONS.  For purposes of this Lease the following words or
          -----------
phrases shall have the following meanings:

          BUILDING.  Shall mean that certain office/warehouse building located
          --------
on the Real Estate described in Exhibit "C" hereto.  The address of the Building
is:

           7920-8028 Century Boulevard, Chanhassen, Minnesota 55317

          LEASED PREMISES.  Shall mean that portion of the Building outlined on
          ---------------
Exhibit "C" attached hereto containing 25,398 square feet of rentable area
measured from the exterior surface of the exterior walls to the center of the
interior walls.  The Leased Premises street address is:

           7974-7984 Century Boulevard, Chanhassen, Minnesota 55317

          PROJECT.  Shall mean and refer to the Building, Real Estate and all
          -------
improvements situated thereon.

          REAL ESTATE.  Shall mean that certain parcel of Real Estate described
          -----------
in Exhibit "C" hereto.

          RENTABLE AREA.  Shall mean the sum of the square footage contained in
          -------------
the Leased Premises plus Tenant's percentage of all common areas such as entry
ways, restrooms, hallways, loading docks, mechanical rooms, and other common
areas of the Building.

          TENANT'S PERCENTAGE.  Shall mean that percentage of the Rentable Area
          -------------------
of all areas of the Building designated by Landlord for lease that is included
in the Rentable Area of the Leased Premises.  Based upon the Leased Premises
containing   25,398 square feet of Rentable Area and the Building containing
115,520 square feet of Rentable Area, the Tenant's Percentage is 22.0%.

     2.   DEMISE AND PREMISES.  Subject to the terms and conditions hereof,
          -------------------
Landlord leases to Tenant, and Tenant hires and takes of and from Landlord the
Leased Premises.

     3.   TERM.  The Term of this Lease shall commence on the 1st day of
          ----
October, 1999, and shall terminate on the 30th day of September, 2005, unless
earlier terminated as hereinafter provided.  In the event Landlord does not have
a Certificate of Occupancy from the City of Chanhassen as of October 1, 1999,
this Lease shall commence on the date Landlord receives said Certificate of
Occupancy from the City of Chanhassen and the Lease shall terminate on the date
which is later of September 30, 2005 or six years and zero months after the
actual commencement date of this Lease, unless earlier terminated as herein
provided.  However, Tenant shall begin paying Base Rent at the actual
commencement of this Lease if said commencement is later than October 1, 1999.
Landlord and Tenant shall execute a Lease Amendment stating the actual
commencement and termination dates and corresponding Base Rents for said dates
as stated in Section 3 herein.

     4.   BASE RENT.  Tenant agrees to pay Landlord, at 3610 County Road 101,
          ---------
Wayzata, Minnesota, 55391 or such other place as Landlord may from time to time
designate in writing, a monthly Base Rent of $19,049.00 per month from October
1, 1999 through September 30, 2002; $20,954.00 per month from October 1, 2002
through September 30, 2005 payable in advance on the first day of each
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month during the term of this Lease without demand therefore or deduction or set
off. Base Rent for the first month of the term of this Lease is payable upon
execution of the Lease. In the event the commencement date of this Lease falls
on a date other than the first day of the month, the rent payable for the first
month shall be adjusted on a pro rata basis and shall be payable on or before
the commencement date. However, Tenant shall begin paying Base Rent at the
actual commencement of this Lease if said commencement is later than October 1,
1999. Landlord and Tenant shall execute a Lease Amendment stating the actual
commencement and termination dates and corresponding Base Rents for said dates
as stated in Section 3 herein.

     5.   OPERATING EXPENSES.  Tenant shall pay to Landlord as additional rent
          ------------------
hereunder, payable at the same time and location as the Base Rent, Tenant's
Percentage (22.0%), of the following amounts:

     a.   All real estate taxes and installments of special assessments which
          shall accrue or become a lien against, or are payable in respect to
          any part of the Project during the term of this Lease and all other
          governmental impositions, including, but not limited to, amounts
          payable under assessments, gross receipts taxes and taxes on rentals
          (other than income taxes) relating to the Project.

     b.   All other reasonable costs and expenses which Landlord may incur in
          maintaining and operating the Project that may be expensed rather than
          capitalized by Landlord for Federal income tax purposes including, but
          not limited to costs actually incurred for cutting, fertilizing and
          maintaining grass, shrubbery, shrubbery beds, and trees; sewer, water
          and management fees (not to exceed 4% of Base Rent and Operating
          Expenses), including reasonable expenses reimbursable to any manager;
          fees for professional services, including the costs of contesting real
          estate taxes; charges under maintenance and service contracts, all
          supplies purchased for use for the Project; insurance maintained by
          Landlord; cleaning, maintaining, repairing, resurfacing, striping,
          seal coating and snow removal of walkways, driveways, and parking
          areas; lighting, sodding, planting and policing the Project;
          maintaining, repairing and replacing roofs, downspouts, common
          electrical, plumbing, and other utility services, sprinkler alarm
          systems, and irrigation systems, and common area recycling.  Tenant
          shall not be responsible for roof replacement during the original roof
          warranty period unless Tenant's use of the Leased Premises has caused
          such replacement.  Tenant shall not be responsible for the replacement
          of entire common electrical, plumbing, utility, sprinkler alarm or
          irrigation systems for the Project during the initial term of this
          Lease but shall be responsible, as stated herein, for the repair of
          components of said systems.  Operating expenses shall not include
          depreciation, leasing commissions, or payments of principal and or
          interest on any mortgage on the Project.

     c.   Operating Expenses shall also include yearly amortization of the cost
          of capital improvements (i) made to reduce Operating Expenses or limit
          increases therein, (ii) required by Landlord's insurance carrier,
          (iii) required by any law, rule, regulation or order of any
          governmental or quasigovernmental authority having jurisdiction or
          (iv) made to extend the life of or maintain or replace any component
          of the project; amortized over the useful life of such capital
          improvements in accordance with generally-accepted accounting
          principles.

     d.   Prior to the Commencement Date and as frequently thereafter as
          Landlord shall deem appropriate, Landlord may give Tenant notice of
          Landlord's estimate of Operating Expenses for the Project for the
          then-current calendar year ("Estimated Operating Expenses").  Tenant
          shall pay throughout the Term of this Lease, as additional rent
          hereunder, on the first day of each month together with each Base Rent
          payment due, one-twelfth (or a pro rata portion thereof for partial
          months) of Tenant's Percentage of the most current Estimated Operating
          Expenses.  Tenant shall have the right to review Landlord's Operating
          Expense estimate and prior year detail once per calendar year at

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          Landlord's place of business during normal business hours with
          reasonable advance notice to Landlord.

     e.   Within a reasonable time after the expiration of each calendar year,
          Landlord shall submit to Tenant a statement setting forth (I) the
          actual Operating Expenses of the Project for such calendar year, (ii)
          Tenant's Percentage of such actual Operating Expenses, and (iii) the
          aggregate of Tenant's payments of Estimated Operating Expenses for
          such year.  Within ten (10) days after the delivery of such statement
          (including any statement delivered after the expiration or termination
          of the Term of this Lease), the party in whose favor the difference,
          if any, between clause (ii) and clause (iii) exists, shall pay the
          amount of such difference to the other provided that Landlord may, at
          Landlord's option, credit any overpayment by Tenant against Tenant's
          current obligation for payment of Rent or Additional Rent except in
          the last year (or extension year) Landlord shall pay the amount of
          such difference to Tenant within thirty (30) days of the termination
          or expiration of this Lease.  Notwithstanding any provision of this
          Lease to the contrary, Landlord shall be entitled to retain as
          Landlord's sole property, and Landlord shall not be obligated to
          refund to Tenant or to any other tenant of the Project, any and all
          sums received by Landlord as and for tax increment financing
          assistance whether or not such sums are received on a so called "pay
          as you go" basis, or otherwise.

     6.   SERVICE AND UTILITIES.  Tenant agrees that it shall pay all costs
          ---------------------
incurred in operating, maintaining, repairing and replacing all heating,
ventilating, air conditioning (HVAC), plumbing and other utility systems serving
the Leased Premises, however, provided Tenant's use of the Leased Premises is
not harmful to existing HVAC equipment and provided Tenant maintains said HVAC
equipment according to manufacturer's recommendations, Tenant shall not be
responsible for the replacement of said units during the initial term of this
Lease or expiration of the warranty for said HVAC equipment, whichever is later.
Tenant shall be responsible for all costs for the maintenance and repair of said
HVAC equipment.  All applicable manufacturer's warranties for said HVAC
equipment shall be transferable to Tenant.  Tenant agrees to pay all charges for
heat, air conditioning and utility services furnished to the Leased Premises
during the term of this Lease including, but not by way of limitation, gas,
electric, sewer, water, telephone, sprinkler alarm system and rubbish removal.
Payments for utility services shall be paid by Tenant directly to the
appropriate utility authorities, when due, if such utility authorities permit or
accept direct payment.

     All payments to be made by Tenant pursuant to this Section 6 shall be in
addition to payments for Operating Expenses to be paid by Tenant under Section 5
of the Lease.  Landlord shall not be liable for failure to furnish, or for delay
or suspension in furnishing, lighting, heat, air conditioning, water service or
other utilities if such failure or suspension is caused by breakdown,
maintenance, repairs, strikes, scarcity of labor or materials, acts of third
parties or causes beyond Landlord's control.

     7.   USE OF PREMISES.  Tenant agrees that it will use and occupy the Leased
          ---------------
Premises solely for office and storage purposes.  Tenant will not use or occupy
the Leased Premises for any unlawful purpose and will comply with all present
and future laws, ordinances, regulations and orders of all governmental units
having jurisdiction over the Leased Premises.  Tenant shall not cause or permit
any unusual noise, odors or nuisance in or about the Leased Premises and the
Building and grounds nor shall Tenant permit any debris, property or merchandise
of Tenant, its officers, employees or agents to be placed or left upon the
grounds; and Tenant, its officers and employees shall observe all rules and
regulations adopted by Landlord for the general safety, comfort and convenience
of Landlord, Tenant and other tenants including the reasonable assignment of one
hundred twenty (120) parking spaces, as shown on Exhibit D, for the exclusive
use of Tenant or other tenants of Landlord in the Building.  Landlord disclaims
any warranty that the Leased Premises are suitable for Tenant's use and Tenant
acknowledges that it has had full opportunity to make its own determination in
this regard.

     Tenant warrants that the operation of its business will not be harmful to
the Building or the mechanical equipment within the Building and Tenant shall be
liable in the event of damage arising from such harmful operation.  In the event
Landlord's insurance premiums are increased above the standard

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building rate as a result of Tenant's use of the Leased Premises, Tenant will
pay to Landlord as additional rent the amount of such increase.

     In the event Tenant shall cause or permit any unusual noise, odor or
nuisance or the storage of any debris, property or merchandise of Tenant, its
officers, employees or agents, in or about the Leased Premises, Building or
grounds in violation of the terms of this Section 7, Landlord shall, after
notice to Tenant and Tenant's failure to correct said violation within 5
business days of said notice, be entitled to take any steps it deems reasonably
necessary to correct or remove such violation and Tenant shall pay Landlord, as
additional rent hereunder, all costs and expenses incurred in such correction or
removal including all costs and expenses incurred in ascertaining which Tenant
is responsible for such violation.

     8.   ASSIGNMENT AND SUBLETTING.  Tenant will not assign, transfer, mortgage
          -------------------------
or encumber its interest in this Lease or sublet or rent or permit occupancy or
use of the Leased Premises, or any part thereof by any third party; nor shall
any assignment or transfer of this Lease be effectuated by operation of law or
otherwise, without in each such case obtaining the prior written consent of
Landlord, which consent  will not be unreasonably withheld, delayed or
conditioned by Landlord unless in Landlord's reasonable opinion such assignment
or transfer adversely affects the Leased Premises or Building.  Tenant shall
seek such consent of Landlord by a written request, setting forth such
information as Landlord may deem necessary and reimburse Landlord as additional
rent hereunder for any costs Landlord may incur, including Landlord's attorney's
fees, in reviewing and responding to Tenant's request.  The consent by Landlord
to any assignment or subletting shall not be construed as a waiver or release of
Tenant from the terms of any covenant or obligation under this Lease, nor shall
the collection or acceptance of rent from any transferee under an assignment
constitute an acceptance of the assignment or a waiver or release of Tenant from
any covenant or obligation contained in this Lease, nor shall any assignment be
construed to relieve Tenant from the requirement of obtaining the consent in
writing of Landlord to any further assignment or subletting.  No assignment or
sublease or other transfer of this Lease shall be effective unless the assignee,
sublessee or transferee shall at the time of such assignment, sublease or
transfer, assume in writing, all of the terms, covenants and conditions of this
Lease to be performed by Tenant.

     Notwithstanding the foregoing, Tenant shall have the right to assign this
Lease or sublet the Leased Premises, in whole or in part, to an affiliate of
Tenant and/or in connection with the sale of all or substantially all of the
stock or assets of Tenant and/or in connection with the sale of the group(s),
division(s), or section(s) or of all or substantially all of the assets of such
group(s), division(s) or section(s) of Tenant occupying the Leased Premises
provided the following conditions are met: a) the assignee or subtenant's
financial standing shall be equal to or greater than that of Tenant; b) the
assignee or subtenant's use shall not be substantially different from that
conducted by Tenant and shall not involve greater use of Hazardous Substances
than Tenant's use; c) any assignee or subtenant shall agree in writing to comply
with all provisions of this Lease and a copy of such agreement and the
assignment or sublease shall be delivered to Landlord; and d) such assignment or
sublease shall not violate the terms of any mortgage to which the Landlord is a
party.  In the event of assignment in accordance with the terms of this Section
8, Tenants' obligation and liability to pay Base Rent and Operating Expenses
shall transfer to said subtenant, assignee or affiliate.

Whether or not Landlord has consented to an assignment or sublease, Tenant shall
pay directly to Landlord the amount by which the rent or other payments received
by Tenant pursuant to such assignment or sublease exceeds, in any month, the
Base Rent and other payments payable by Tenant to Landlord hereunder.

     9.   SUBORDINATION.  Without the necessity of any additional document being
          -------------
executed by Tenant for the purpose of effecting a subordination, this Lease
shall be subject and subordinate at all times to the lien of any mortgage now or
hereafter placed on, against or affecting the Project, or Landlord's interest or
estate therein; provided, however, that if the Landlord, any mortgagee or holder
of any mortgage elects to have Tenant's interest in this Lease be superior to
any such Mortgage, then by notice to Tenant, this Lease shall be deemed
superior, whether this Lease was executed before or after said mortgage.
Notwithstanding the foregoing, Tenant covenants and agrees to execute and
deliver upon

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demand such further instruments evidencing such subordination or superiority of
this Lease as may be required by Landlord or any mortgagee. Tenant further
agrees that in the event that any proceedings are brought for the foreclosure of
any mortgage, Tenant shall attorn to the purchaser at such foreclosure sale and
recognize such purchaser as the Landlord under this Lease, if requested to do so
by such purchaser, provided that said purchaser agrees, in writing, that
Tenant's possession of the Leased Premises shall not be disturbed so long as
Tenant shall continue to perform all of the covenants and conditions of this
Lease, in which case Tenant's obligations to perform such covenants and
conditions shall not be in any way diminished thereby. Tenant further waives the
provisions of any statute or rule of law, now or hereafter in effect, which may
give or purport to give Tenant any right to terminate or otherwise adversely
affect this Lease and the obligations of Tenant hereunder in the event that any
such foreclosure proceeding is prosecuted or completed.

     10.  SALE OR MORTGAGE OF THE BUILDING.  In the event of a sale of the
          --------------------------------
Project, Landlord shall be relieved of all liability under this Lease accruing
from and after the date of sale provided Landlord has obtained the written
agreement of its transferee or assignee to assume and carry out all of the
covenants and obligations of the Landlord hereunder.

     Tenant agrees at any time and from time to time, upon not less than  ten
(10) days' prior written notice by Landlord, to execute, acknowledge and deliver
to Landlord or a party designated by Landlord a statement in writing (i)
certifying that this Lease is unmodified and in full force and effect, or if
there have been modifications, that this Lease is in full force and effect as
modified and stating the modifications, (ii) stating the dates to which the Base
Rent, Operating Expenses and other charges hereunder have been paid by Tenant,
(iii) stating whether or not Landlord is in default in the performance of any
covenant, agreement or condition contained in this Lease, and, if so, specifying
each such default, (iv) agreeing that Tenant and Landlord will not thereafter
modify the Lease without the approval of any mortgagee identified by Landlord,
and (v) agreeing that, except for any security deposit required herein, Tenant
shall not prepay any rent more than thirty (30) days in advance, and (vi) such
other matters relating to this Lease as may reasonably be requested.  Any such
statement delivered pursuant hereto may be relied upon by any owner of the
Project, any prospective purchaser of the Project, any mortgagee or prospective
mortgagee of the Project or of Landlord's interest, or any prospective assignee
of any such mortgagee.

     Landlord agrees at any time and from time to time, upon not less than ten
(10) business days' prior written notice by Tenant, to execute, acknowledge and
deliver to Tenant a statement in writing (i) certifying that this Lease is
unmodified and in full force and effect, or if there have been modifications,
that this Lease is in full force and effect as modified and stating the
modifications, (ii) stating the dates to which the Base Rent, Operating Expenses
and other charges hereunder have been paid by Tenant, (iii) stating whether or
not, to Landlord's knowledge, Tenant is in default, and (iv) such other
certifications relating to this Lease as may reasonably be requested.

     Upon securing a mortgage for the Building, Landlord will provide Tenant
with an agreement of non-disturbance.

     11.  TENANT INSURANCE.  Tenant agrees that it shall purchase in advance and
          ----------------
carry the following insurance at its own expense: a) "All Risk" fire and
extended coverage insurance insuring Tenant's personal property, furniture,
trade fixtures, inventory and business records against loss from all insurable
events for the full replacement value thereof; b) insurance against interruption
of Tenant's business activities; c) comprehensive general public liability
insurance, providing coverage on an "occurrence" and, not a "claims made" basis,
covering all acts of Tenant, its employees, agents, representatives and guests
and insuring against all claims arising from injury to persons or damage to
property in or about the Leased Premises, Building or the Project in a single
limit amount of not less than $1,000,000.00 for personal injury or death and not
less than $500,000.00 for property damage and fire legal liability; d) workers
compensation insurance covering Tenant's business activities conducted on the
Leased Premises and providing such coverage as Tenant is statutorially required
to maintain.

     The insurance maintained by Tenant under Clauses a), c) and of the
immediately preceding paragraph of this Section 11 shall name Landlord as an
additional insured, shall be issued by insurance

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companies reasonably acceptable to Landlord and shall provide for thirty (30)
days written notice to Landlord prior to cancellation, non-renewal or material
modification. Certificates of all such insurance shall be delivered to Landlord
prior to occupancy of the Leased Premises by Tenant and at least thirty (30)
days prior to the termination date of any existing policy. Tenant shall pay to
Landlord, upon demand, as additional rent the cost of securing such insurance in
the event Tenant fails to furnish certificates of insurance to Landlord.
However, it is not Landlord's duty nor obligation to secure such insurance for
Tenant.

     Landlord shall maintain at all times during the term of this Lease: a)
standard all risk fire and casualty insurance in an amount not less than the
actual replacement cost of the Building as calculated annually according to the
applicable insurance policies, and b) liability insurance covering all acts of
Landlord and its agents and employees for matters occurring in, on or about the
Building and Real Estate in a single limit amount of not less than $1,000,000.00
for bodily personal injury or death and not less than $500,000.00 for property
damage and fire legal liability.

     12.  ANNUAL OPERATING STATEMENTS.  In the event Tenant has been in default
          ----------------------------
of any of the terms of this Lease herein, then Tenant shall, within One Hundred
Twenty (120) days after the close of each fiscal year the Tenant shall furnish
the Landlord with annual operating statements and balance sheets certified by an
officer of the Company.

     13.  FIRE OR OTHER CASUALITY.  If the Leased Premises or the Project shall
          -----------------------
be damaged or destroyed by fire or other cause, Landlord shall either (a)
undertake to restore such damage (provided, however, that Landlord shall not be
required to spend amounts in excess of insurance proceeds available to Landlord
to effect such restoration), or (b) in the event the Leased Premises or the
Project are damaged by fire or other cause to such extent that damage cannot, in
Landlord's  reasonable judgment, be economically repaired within one hundred and
eighty (180) days after the date of such damage (taking into account the time
necessary to effectuate a satisfactory settlement with any insurance company and
using normal construction methods without overtime or other premium), terminate
this Lease, by notice given to Tenant within sixty (60) days after the date of
damage.  Any termination hereunder by reason of damage to the Leased Premises
shall be effective as of the date of the damage.  Any termination by reason of
damage to the Project but not Leased Premises shall be effective as of the date
notice is given. If Landlord elects to restore, Landlord shall not be obligated
to restore any improvements to the Leased Premises which were not owned and or
constructed by Landlord.  Upon substantial completion by Landlord of its work,
Tenant shall undertake to restore its leasehold improvements and trade fixtures
with all due diligence.  This Lease shall, unless terminated by Landlord
pursuant to this Section 13, remain in full force and effect following such
damage, and, in the case of damage to the Leased Premises, the Base Rent and
Operating Expenses, prorated to the extent that the Leased Premises are rendered
untenable, shall be equitably abated until such repairs are completed; provided,
however, that if Tenant does not restore its leasehold improvements, except for
the Leasehold Improvements set forth in Exhibit C which the Landlord is
obligated to restore, and trade fixtures with due diligence, abatement shall
cease as of the date restoration could have been completed using due diligence.
Notwithstanding the foregoing, if the destruction or damage was wholly or
partially caused by the intentional misconduct, gross negligence or breach of
this Lease by Tenant, its officers, agents or employees, the rent shall not
abate and Tenant shall remain liable for the same.

     14.  CONDEMNATION.  If the whole or any part of the Leased Premises shall
          ------------
be taken or condemned or purchased under threat of condemnation by any
governmental authority, then the Term of this Lease shall cease and terminate as
of the date when the interference with possession, enjoyment or value of the
Leased Premises occurs and Tenant shall have no claim against the condemning
authority, Landlord or otherwise for any portion of the amount that may be
awarded as damages as a result of such taking or condemnation or for the value
of any unexpired Term of this Lease, provided, however, that Landlord shall not
be entitled to any award made to Tenant for loss of business or the fair value
of and the cost of removal of stock and trade fixtures.  In the event part of
the Project, but not the Leased Premises, is condemned to the extent that it
cannot, in Landlord's sole judgment, be economically restored within a
reasonable time, Landlord shall have the option, by notice given to Tenant
within 120

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days of the date of interference with possession, to terminate this Lease as of
the date of such interference with possession.

     15.  ALTERATIONS AND SIGNS.  Tenant will not make or permit anyone to make
          ---------------------
any structural alterations, additions or improvements in or to the Leased
Premises or the Building without the prior written consent of Landlord, provided
that Landlord shall not unreasonably withhold, delay or condition consent to
Tenant's interior decorations unless, in Landlord's reasonable opinion, said
interior alterations, additions or improvements adversely affect the Leased
Premises or Building.  Notwithstanding anything in this Lease to the contrary,
Tenant shall be allowed, without Landlord approval, to make non-structural
improvements or alterations to the Leased Premises provided said improvements or
alterations do not exceed $7,500.00.  However, Tenant shall still notify
Landlord, in writing, of its' intention to perform said improvements or
alterations.  As a condition precedent to written consent of Landlord hereunder,
Tenant agrees to obtain and deliver to Landlord such security against mechanic's
lien as Landlord shall reasonably request.  If any mechanic's lien is filed
against any part of the Building or the Project for work claimed to have been
done for, or labor or materials claimed to have been furnished to or authorized
by Tenant, such mechanic's lien shall be discharged by Tenant within ten (10)
days thereafter, at Tenant's sole cost and expense, by the payment and
satisfaction thereof or by making any deposit required by law unless the amount
owed is disputed in good faith by Tenant.  In no event shall said dispute
continue for more than thirty (30) business days after Landlord is notified of
said dispute.  Should Tenant fail to obtain the discharge of any such mechanic's
lien within ten (10) days of the filing thereof, Landlord shall be entitled to
obtain such discharge by whatever reasonable means Landlord deems expedient, and
all costs incurred by Landlord in obtaining such discharge including reasonable
attorney's fees, shall be paid by Tenant as additional rent hereunder.

     All alterations, decorations, additions or improvements in or to the Leased
Premises or the Project made by Tenant or by Landlord on Tenant's behalf shall
immediately become the property of Landlord and shall remain upon and be
surrendered with the Leased Premises as a part thereof at the end of the term
hereof without disturbance, molestation or injury, unless Landlord requires
specific portions thereof to be removed by Tenant at Tenant's sole expense, in
which event Tenant shall do so prior to the expiration of the term of this Lease
at its expense, and shall repair any damage caused thereby.  Landlord shall
inform Tenant at the time of construction of any alterations or improvements if
said alterations or improvements shall be removed by Tenant at Tenant's expense
at the expiration or termination of this Lease.  Notwithstanding the foregoing,
if Tenant is not in default in the performance of any of its obligations under
this Lease, and further provided that if any and all damage resulting therefrom
be repaired, Tenant shall have the right to remove at its own expense, prior to
the expiration or termination of the term of this Lease, all moveable furniture
or trade fixtures installed in the Leased Premises provided such removal is
completed with no damage to the Leased Premises or the Building.

     Tenant shall not place or maintain any sign, advertisement or notice on any
part of the outside or the inside of the Building without Landlord's prior
written approval.  Any such approved use shall be at the sole expense and cost
of Tenant.

     Tenant shall not install any equipment which will or may necessitate any
changes, replacements or additions to, or in the use of, the heating,
ventilating or air conditioning system, or electrical system of the Leased
Premises or the Project nor any equipment containing Hazardous Substances or
chlorofluorocarbons without obtaining the prior written consent of Landlord.
Equipment belonging to Tenant which causes fumes, odors, noise or vibration that
may be transmitted to the structure of the Building or to any space therein to
such a degree as to be objectionable to Landlord or to any tenant in the Project
shall be installed and maintained by Tenant, at Tenant's expense, on vibration
eliminators, with ventilation equipment or other devices sufficient to eliminate
such fumes, odors, noise and vibration.

     16.  WAIVER OF SUBROGATION.  Notwithstanding any other provisions in this
          ---------------------
Lease to the contrary, Landlord and Tenant hereby release one another, their
respective officers, agents, partners, employees and property manager, from any
and all liability or responsibility (to the other or anyone claiming through or
under them by way of subrogation or otherwise) for any loss or damage covered by
insurance actually carried or coverable by the insurance required by Section 11
hereof, even if such loss

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or damage shall have been caused by the fault or negligence of the other party,
or anyone for whom such party may be responsible.

     17.  WAIVER AND INDEMNITY.  Tenant agrees that Landlord, its officers,
          --------------------
agents, partners and employees shall not be liable to Tenant or those claiming
through or under Tenant for any injury, death or property damage occurring in,
on or about the Leased Premises, the Building or the Project except to the
extent such injury, death or property damage was caused by the intentional
misconduct or gross negligence of Landlord, its agents or employees.  Without
limitation of the foregoing, Landlord shall not be liable to Tenant for any
damage, compensation or claims arising from: loss or damage to books, records,
files, money, securities, negotiable instruments or other papers in or about the
Leased Premises; the necessity of repairing any portion of the Project; the
interruption in the use of the Leased Premises; accident or damage resulting
from the use or operation by Landlord, Tenant, or any other person or persons
whatsoever of elevators, or heating, cooling, electrical or plumbing equipment
or apparatus; the termination of this Lease by reason of the destruction or
condemnation of the Leased Premises; any fire, robbery, theft, or any other
casualty; any leakage or bursting of pipes or water vessels or any roof or wall
leakage in any part or portion of the Leased Premises or the Building; water,
rain, snow or underground water that may leak into, flow on, or flow from, any
part of the Leased Premises or the Project.

     Tenant agrees to indemnify and hold harmless Landlord and its officers,
agents, partners and employees from and against all claims, costs, liabilities
and expenses, of whatever nature a) arising or resulting from any act, omission
or gross negligence of Tenant, its officers, employees and agents in or about
the Leased Premises, Building or the Project or, b) arising in connection with
Tenant's use of occupancy of the Leased Premises or the conduct of Tenant's
business thereon, and agrees to indemnify and hold harmless Landlord from and
against all costs, expenses and liabilities, including reasonable attorneys
fees, incurred in connection with any such claims or proceedings brought
thereon, and the defense thereof.

     18.  REPAIRS.  Tenant shall put, keep, repair and maintain the Leased
          -------
Premises and  the fixtures and equipment therein at all times in a good,
properly functioning, safe and sanitary condition and state of repair,
reasonable wear and tear excepted, free of debris and other similar
obstructions.  Tenant shall allow Landlord access to the Leased Premises during
all reasonable hours upon twenty-four (24) hours notice, except in the case of
emergencies, to make repairs required to be made by Tenant which Tenant fails or
refuses to make, and shall pay Landlord as additional rent the cost of such
repairs made for Tenant by Landlord.  Subject to Tenant's obligation to pay
Operating Expenses pursuant to Section 5 of this Lease, Landlord shall:  i) make
all necessary repairs to the outer walls, roof, and structural elements of the
Building,  ii) keep the plumbing, sewage, heating, air conditioning, electrical
and ventilating systems of the Building not serving the Leased Premises in good
repair, ordinary wear and tear excepted, and  iii) maintain and keep the common
areas, grounds, walkways, driveways and parking areas in a neat and clean
condition.  Tenant shall pay for electrical lamps and ballasts used in the
Leased Premises.  Any cost of repairs, modifications, alterations or
improvements to the Building, the Leased Premises or the Project which are
occasioned by the negligence or default of Tenant, its officers, employees,
agents or invitees, or by the requirements of law, ordinance or other
governmental directive and which arise out of the nature of Tenant's use and
occupancy of the Leased Premises or the installations of Tenant in the Leased
Premises shall be paid solely by Tenant.

     Tenant will not suffer or permit any waste or injury to the Leased Premises
and will, at the expiration of the term of this Lease, surrender the same with
all walls, floor coverings and other components thereof in the same order and
condition as on the Commencement Date, ordinary wear and tear, subsequent
alterations or improvements consented to by Landlord as provided in Section 15
of this Lease, and casualty damage covered by insurance, excepted.

     19.  ENTRY AND INSPECTION.  Upon twenty-four (24) hours prior notice,
          --------------------
except in the case of emergencies, Tenant shall permit Landlord, its agents or
representatives to enter the Leased Premises to examine and inspect the same or
to make such alterations, renovations or repairs to the Leased Premises or the
Building as Landlord may deem necessary or desirable, or to exhibit the Leased
Premises to prospective Tenants during the last one hundred eighty  (180) days
of the term of this Lease

                                       8
<PAGE>

or to prospective purchasers at any time during the term. Landlord shall make
reasonable efforts not to unreasonably interfere with the conduct of Tenant's
business, but Landlord shall in no event be liable to Tenant or those claiming
under or through Tenant for any loss or damages in connection with such entry,
inspection, alterations, renovations or repairs.

     20.  IMPROVEMENTS.  Landlord shall, at its' sole cost and expense, complete
          ------------
the Leased Premises in accordance with the plans and specifications set forth in
Exhibits "A" and "B" (Improvement Allowance and Space Plan) in a workmanlike
fashion with such minor modifications, as approved by Tenant in writing, as
determined by Landlord or its architect or as directed by governmental
inspectors or agents.  The taking of possession of the Leased Premises or
renewal of this Lease by Tenant shall be conclusive evidence that the Leased
Premises and the Building are in good and satisfactory condition at the time of
such taking of possession or renewal.

     21.  WAIVER.  No waiver by either party of any breach of any covenant,
          ------
condition or agreement herein contained shall operate as a waiver of such
covenant, condition, or agreement itself, or of any subsequent breach thereof.
No payment by Tenant or receipt by Landlord of a lesser amount than the monthly
installments of rent herein stipulated shall be deemed to be other than on
account of the earliest stipulated rent nor shall any endorsement or statement
on any check or letter accompanying a check for payment of rent be deemed on
accord and satisfaction, and Landlord may accept such check or payment without
prejudice to Landlord's right to recover the balance of such rent, to terminate
this Lease, to repossess the Leased Premises or to pursue any other remedy
provided in this Lease.  No re-entry by Landlord, and no acceptance by Landlord
of keys from Tenant, shall be considered an acceptance of a surrender of this
Lease or the Leased Premises.

     22.  COVENANTS OF LANDLORD.  Landlord covenants that it has the right to
          ---------------------
make this Lease for the term aforesaid and covenants that if Tenant shall pay
the rent and perform all of the covenants, terms and conditions of this Lease to
be performed by Tenant, Tenant shall, during the term of this Lease freely,
peaceably and quietly occupy and enjoy the full possession of the Leased
Premises.  The term "Landlord" as used in this Lease shall mean solely the owner
of the Project.  In case the original or any successor Landlord shall convey or
otherwise dispose of its entire interest in the Project and turn over to the
transferee any funds held by it hereunder in which Tenant has an interest, all
liabilities of such Landlord under this Lease shall terminate, except for those
liabilities arising during the term of ownership by Landlord.

     23.  NO REPRESENTATIONS BY LANDLORD.  Neither Landlord nor any agent,
          ------------------------------
employee or property manager of Landlord has made any representations with
respect to the Leased Premises or the Project except as herein expressly stated,
and no right, privileges, easements or licenses are acquired by Tenant except as
herein expressly stated.

     24.  DEFAULT.
          -------

     a)   Any one of the following events shall constitute an Event of Default:

          i)   Tenant shall fail to pay any monthly installment of Base Rent,
               Operating Expenses, or additional rent as herein provided and
               such default shall continue for five (5) days after notice from
               Landlord; however, such late payment shall not occur more than
               once per calendar year;

          ii)  Tenant shall violate or fail to perform any of the other terms,
               covenants or conditions of this Lease and such default shall
               continue for 30 days after notice from Landlord;


          iii) Tenant shall file or have filed against it or any guarantor of
               this Lease any bankruptcy or other creditor's action which is not
               dismissed within sixty (60) days

                                       9
<PAGE>

               provided Tenant is diligently pursuing cure, or make an
               assignment for the benefit of its creditors;


     b)   If an Event of Default shall have occurred and be continuing, Landlord
          may at its sole option by written notice to Tenant terminate this
          Lease.  Neither the passage of time after the occurrence of the Event
          of Default nor exercise by Landlord or any other remedy with regard to
          such Event of Default shall limit Landlord's right under this
          Paragraph 24 b).

     c)   If an Event of Default shall have occurred and be continuing, whether
          or not Landlord elects to terminate this Lease, Landlord may enter
          upon and repossess the Leased Premises (said repossession being
          hereinafter referred to as "Repossession") by force, summary
          proceedings, ejectment or otherwise, and may remove Tenant and all
          other persons and property therefrom.

     d)   From time to time after Repossession of the Leased Premises, whether
          or not this Lease has been terminated, Landlord may, but shall not be
          obligated to, attempt to relet the Leased Premises for the account of
          Tenant in the name of Landlord or otherwise, for such term or terms
          (which may be greater or less than the period which would otherwise
          have constituted the balance of the Term) and for such terms (which
          may include concessions or free rent) and for such uses as Landlord,
          in its sole and unqualified discretion, may determine, and may collect
          and receive the rent therefor.  Landlord shall not be responsible or
          liable for any failure to collect any rent due upon any such
          reletting.

     e)   No termination of this Lease pursuant to Paragraph 24 b) and no
          Repossession of the Leased Premises pursuant to Paragraph 24 c) or
          otherwise shall relieve Tenant of its liabilities and obligations
          under this Lease, all of which shall survive any such termination or
          Repossession.  In the event of any such termination or Repossession,
          whether or not the Leased Premises shall have been relet, Tenant shall
          pay to Landlord the Base Rent and other sums and charges to be paid by
          Tenant up to the time of such termination or Repossession, and
          thereafter Tenant, until the end of what would have been the term in
          the absence of such termination or Repossession, shall pay to
          Landlord, as and for liquidated and agreed current damages for
          Tenant's default, the equivalent of the amount of the Base Rent,
          Operating Expenses, additional rent and such other sums and charges
          which would be payable under this Lease by Tenant if this Lease were
          still in effect, less the net proceeds, if any, of any reletting
          effected pursuant to the provisions of Paragraph 24 d) after deducting
          all of Landlord's expenses in connection with such reletting,
          including without limitation, all repossession costs, brokerage and
          management commissions, operating expenses, legal expenses, reasonable
          attorneys' fees, alteration costs, and expenses of preparation for
          such reletting.  Tenant shall pay such current damages to Landlord
          monthly on the days on which the Base Rent would have been payable
          under this Lease if this Lease were still in effect, and Landlord
          shall be entitled to recover the same from Tenant on each such day.
          At any time, after such termination or Repossession, whether or not
          Landlord shall have collected any current damages as aforesaid,
          Landlord shall be entitled to recover from Tenant, and Tenant shall
          pay to Landlord on demand, as and for liquidated and agreed final
          damage for Tenant's default, an amount equal to the then present worth
          of the excess of the Base Rent and other sums or charges reserved
          under this Lease from the day of such termination or repossession for
          what would be the then unexpired term if the same had remained in
          effect, over the then net fair rental value of the Leased Premises for
          the same period.

     f)   If an Event of Default shall have occurred and Landlord places in the
          hands of an attorney the enforcement of all or any of the terms,
          covenants, agreements or conditions of this Lease, the collection of
          any rent or other such sums and charges that are due or to become due,
          or the recovery of possession of the Leased Premises, Tenant agrees to
          reimburse Landlord, as additional rent hereunder, for Landlord's
          reasonable attorneys

                                       10
<PAGE>

          fees, together with the actual cost of maintaining any action
          commenced in law or equity by said attorneys for the services of the
          attorneys, whether suit is actually filed or not. Such reimbursement
          shall be payable within 30 days of demand therefor.

     25.  SURRENDER.  Tenant shall surrender the Leased Premises to Landlord
          ---------
upon termination of this Lease, whether such termination occurs at the end of
the lease term or sooner, together with all utility systems, improvements,
replacements, alterations and decorations thereto and operating bulbs or tubes
in all light fixtures, broom clean and in good order, condition and repair
except for ordinary wear and tear or damage by casualty.  Tenant shall remove
promptly, upon request by Landlord, alterations, modifications and the like to
the Leased Premises made by Tenant or on behalf of Tenant and shall restore and
repair damage caused by such removal.  Should Tenant fail to surrender the
Leased Premises in the condition required by this section, Landlord shall be
entitled to take whatever steps may, in Landlord's sole discretion, be required
to restore the Leased Premises to said condition and Tenant agrees that it shall
pay to Landlord all costs incurred by Landlord in so restoring the Leased
Premises.

     26.  HOLDING OVER.  Should the Tenant continue to occupy the Leased
          ------------
Premises, or any part thereof, after the expiration or termination of the Term
of this Lease whether with or against the consent of the Landlord, such tenancy
shall be from month to month and Tenant shall pay Landlord the additional rent
set forth in Section 5 plus 1.5 times the Base Rent set forth in Section 4
during the entire period that Tenant continues to so occupy the Leased Premises
after the term of this Lease, plus any other changes occasioned by such
holdover, plus all attorney fees and expenses incurred by Landlord to enforce
its rights hereunder.

     27.  LATE PAYMENT.  Other remedies for non-payment of rent notwithstanding
          ------------
and without prejudice to such remedies, if Tenant fails to pay the monthly base
rent, Operating Expenses or any other payment due hereunder, within the 10 days
immediately following the date on which such payment is due, Tenant shall pay
the following amounts to Landlord as additional rent hereunder:

     a)   Interest on all such past due payments at the rate of 1 1/2% per month
          or at the maximum rate permitted by law whichever rate is lower.
          Interest shall accrue from the date each such late payment became due
          and shall be payable to the date of payment thereof by Tenant;

     b)   A service charge equal to the costs actually incurred by Landlord as a
          result of Tenant's failure to make payments due hereunder including,
          but not limited to, costs incurred in the collection or attempted
          collection of such past due amounts.

     28.  SECURITY AND DAMAGE DEPOSIT.  Upon execution of this Lease, Tenant
          ---------------------------
will deposit with Landlord the sum of Twenty One Thousand Six Hundred Ninety
Four and 00/100 Dollars ($21,694.00), receipt of which is acknowledged hereby by
Landlord, which deposit is to be held by Landlord, without liability for
interest, as a security and damage deposit for the faithful performance by
Tenant during the term hereof or any extension hereof.  Prior to the time when
Tenant shall be entitled to the return of this security deposit, Landlord may
co-mingle such deposit with Landlord's own funds and to use such security
deposit for such purposes as Landlord may determine.  In the event of the
failure of Tenant to keep and perform any of the terms, covenants and conditions
of this Lease to be kept and performed by Tenant during the term hereof or any
extension hereof, then Landlord, either with or without terminating this Lease,
may (but shall not be required to) apply such portion of said deposit as may be
necessary to compensate or repay Landlord for all losses or damages sustained or
to be sustained by Landlord due to such breach on the part of Tenant, including,
but not limited to overdue and unpaid rent, any other sum payable by Tenant to
Landlord pursuant to the provisions of this Lease, damages or deficiencies in
the reletting of Leased Premises, and reasonable attorneys' fees incurred by
Landlord.  Should the entire deposit or any portion thereof, be appropriated and
applied by Landlord, in accordance with the provisions of this paragraph, Tenant
upon written demand by Landlord, shall remit forthwith to Landlord a sufficient
amount of cash to restore said security deposit to the original sum deposited,
and Tenant's failure to do so within ten (10) days after receipt of such demand
shall constitute a breach of this

                                       11
<PAGE>

Lease. Said security deposit shall be returned to Tenant, less any depletion
thereof as the result of the provisions of this paragraph, at the end of the
term of this Lease or any renewal thereof, or upon the earlier termination of
this Lease. Tenant shall have no right to anticipate return of said deposit by
withholding any amount required to be paid pursuant to the provision of this
Lease or otherwise.

     In the event Landlord shall sell the Project, or shall otherwise convey or
dispose of its interest in this Lease, Landlord may assign said security deposit
or any balance thereof to Landlord's assignee, whereupon Landlord shall be
released from all liability for the return or repayment of such security deposit
and Tenant shall look solely to the said assignee for the return and repayment
of said security deposit.  Said security deposit shall not be assigned or
encumbered by Tenant without the written consent of Landlord, and any assignment
or encumbrance without such consent shall not bind Landlord.  In the event of
any rightful and permitted assignment of this Lease by Tenant, said security
deposit shall be deemed to be held by Landlord as a deposit made by the
assignee, and Landlord shall have no further liability with respect to the
return of said security deposit to the Tenant.

     29.  HAZARDOUS SUBSTANCES AND ENVIRONMENTAL REGULATIONS.
          --------------------------------------------------

     a)   When used in this Section 29, the terms "Environmental Regulations"
          and "Hazardous Substances" shall have the following meanings:

          i)   Environmental Regulations shall mean and refer to the
               Comprehensive Environmental Response, Compensation and Liability
               Act of 1980, 42 U.S.C. 9601 et seq., the Minnesota Environmental
               Response and Liability Act, Minn. Stat. Chapter 115B, all
               amendments thereto, and all other laws, acts, statutes,
               ordinances, rules, regulations, orders or determinations of any
               governmental authority pertaining to or regulating Hazardous
               Substances, Infectious Waste, asbestos, radiation, radioactive
               material, health or the environment.

          ii)  Hazardous Substances shall mean and refer to all hazardous
               substances, hazardous waste, toxic waste, asbestos, PCB's,
               radiation, radioactive material, pollutants or contaminants as
               defined in or regulated by Environmental Regulations.

     Tenant warrants, represents and agrees that:

     b)   Its use of the Leased Premises and the Project, and the operation of
          its business thereon, shall not violate any Environmental Regulations.

     c)   Tenant has obtained and shall continue to maintain all permits,
          licenses or similar authorizations required by Environmental
          Regulations to conduct its business on the Leased Premises.

     d)   Tenant's use of the Leased Premises will not result in the disposal,
          discharge, emission or release of any Hazardous Substance in any
          quantity on or about the Leased Premises, Building or the Project or
          the contamination of any part of the Project thereby.

     e)   Upon request by Landlord, Tenant shall deliver to Landlord copies of
          all contracts, programs, management plans or certifications regarding
          the generation, storage, use, removal or disposal of Hazardous
          Substances which are required in order for Tenant to be compliance
          with Environmental Regulations.  Landlord agrees to hold said
          contracts, programs, plans and certifications in confidence.  Tenant
          shall, upon request by Landlord, provide Landlord with copies of
          permits, inspection reports, monitoring reports, license, orders,
          compliance requests or other documentation filed, served, delivered or
          transmitted either with, to or from the Minnesota Pollution Control
          Agency, Minnesota Department of Health or the U.S. Environmental
          Protection Agency or other

                                       12
<PAGE>

          governmental body relating to Tenant's use of Hazardous Substances in
          or about the Leased Premises or the Project.

     In the event Tenant, its officers, partners, agents, employees or
subcontractors shall breach or fail to perform any of the warranties,
representation and agreements contained in this Section, then, in addition to
any other remedy Landlord may have under this Lease, at law or in equity:

     f)   Upon notice from Landlord, Tenant shall remove from the Leased
          Premises, Building or the Project, at Tenant's sole expense, any
          Hazardous Substance which is not in compliance with Environmental
          Regulations or this Lease Agreement;

     g)   Landlord and such Environmental Engineers or consultants as it may
          employ shall be entitled to enter upon the Leased Premises for the
          purpose of conducting such environmental audits or similar tests as
          Landlord may deem necessary and the cost and expense of such
          environmental audits or and tests incurred by Landlord shall be paid
          by Tenant, if Tenant is found to be in Default of this Section 29, as
          additional rent hereunder with the next installment of Base Rent; and

     h)   Tenant shall protect, indemnify and save Landlord harmless from all
          costs, fines, claims, demands, actions, proceedings, judgments and
          damages (including court costs and reasonable attorneys' fees)
          resulting from or arising out of any breach or nonperformance by
          Tenant of the representations, warranties and agreements contained in
          this Section 29 including, without limitation, the cost of removal
          and/or remediation of any disposal, discharge, release or
          contamination of Hazardous Substances on or about the Leased Premises,
          Building or the Project.

     i)   To the best of Landlord's knowledge, there is no hazardous
          substance(s) on or about the Leased Premises, the Building or the real
          property on which it is located and that none of the foregoing is
          subject to any agreement, order of any court or government agency,
          judgement or permit requiring clean up, contribution or other act or
          expense as a result of an environmental condition.  Landlord shall
          indemnify, defend and hold Tenant harmless from any and all costs,
          fines, claims, demands, actions, proceedings, judgments, damages or
          expenses, including, without limitation, reasonable attorney's fees
          and court costs resulting from any environmental liability or
          condition, except to the extent that Tenant has caused such condition.

It is expressly acknowledged by Tenant that all of the terms, covenants and
conditions of this Section 29, including, but not by way of limitation, the
indemnification's herein provided shall survive the termination of this Lease.

     30.  NOTICES.  All notices or other communications hereunder shall be in
          -------
writing and shall be hand delivered or sent by certified mail, receipt requested
or overnight delivery  United States mail to the following address:

Landlord: CENTURY 2000 PARTNERS, LLP
          C/o Steiner Development, Inc.
          Attention:  David Kordonowy
          3610 County Road 101
          Wayzata, Minnesota  55391

Tenant:   A BUSINESS CONFERENCE CALL, INC.
          7974-7984 Century Boulevard
          Chanhassen, Minnesota 55317


Mailed notice shall be effective the day following the day of mailing;

                                       13
<PAGE>

     31.  MISCELLANEOUS.
          -------------

     a)   This Lease Agreement is made and executed in the State of Minnesota,
          and shall be constructed according to the laws of Minnesota;

     b)   The invalidity or unenforceability of any provisions of this agreement
          shall not affect or impair the validity of any provisions; and section
          titles and captions in this Agreement are for convenience only and do
          nor define, limit or construe the contents of such paragraphs;

     c)   If more than one person or entity shall sign this Lease as Tenant, the
          obligations set forth herein shall be deemed joint and several
          obligations of each such party;

     d)   This Lease shall be binding upon and inure to the benefit of the
          parties thereto and, subject to the restrictions and limitations
          herein contained, their respective heirs, successors and assigns;

     e)   Any modification to this Lease must be in writing and signed by both
          Landlord and Tenant.

     32.  REAL ESTATE BROKERS.  Intentionally left blank by Landlord.
          -------------------

                                       14
<PAGE>

     33.  RELOCATION.  Landlord and Tenant agree that Landlord may, at
          -----------
Landlord's reasonable discretion, relocate Tenant in accordance with the
following:  In the event Landlord shall have mutually agreeable like kind space
to the Leased Premises in Arboretum Business Park, Chanhassen, Minnesota to
relocate Tenant to, and providing the base rent, cam and tax for mutually
agreeable like kind space will not result in a higher cost to Tenant than Tenant
is paying for the Leased Premises, Landlord may elect to terminate Tenant's
occupancy of the Leased Premises and relocate the Tenant to the mutually
agreeable like kind space (the "Relocation Clause").  In the event Landlord
elects to relocate the Tenant under this Relocation Clause, then Landlord will
be responsible for the reasonable cost of moving Tenant and Tenant's equipment
inventory and personal property to the mutually agreeable like kind space, and
Tenant shall be responsible for modifications to the mutually agreeable like
kind space which are in excess of those made by Landlord to render the space
like kind.  Like kind shall be deemed to be office and warehouse space as
described in the Lease.  Tenant agrees to execute a new lease, or an amendment
to the Lease, or such other documents as may be required, in the event of the
Landlord's exercise of the Relocation Clause.  Said Relocation, if exercised by
Landlord, and to the extent Landlord has control, shall not result in any down
business time or operational delay for Tenant.

     34.  RIGHT OF FIRST REFUSAL.  Provided Tenant is not in Default of any of
          -----------------------
the terms and conditions herein, and subject to the tenant at the north end of
the Building, DRIASI's right to expand, Tenant shall have a one time Right of
First Refusal to lease the adjoining 6,490 square foot bay at 7968 Century
Boulevard.  Tenant shall have ten (10)  business days to accept Landlord's
offer to lease said adjoining bay.  Rates for said adjoining bay shall be at the
then current rate and terms for the Building for similar office and warehouse
space but in no event shall the rates be less than Tenant is currently paying
for said similar space.  Improvements and lease term, or extension thereof,
shall be mutually agreed upon between Tenant and the Landlord.

     35.  OPTION TO RENEW I.  Provided Tenant is not in Default of any of the
          ------------------
terms and conditions herein and, subject to the tenant at the north end of the
Building, DRIASI's right to expand, Tenant shall have the Option to Renew the
Lease Agreement for a period of 3 years by giving Landlord 150 days advance
written notice of it's' intention to renew. Landlord shall respond to Tenants'
request to exercise this Option to Renew within ten (10) business days. All
terms and conditions of said renewal term shall be the same as stated herein
except Base Rent for said renewal term shall be $23,049.00 per month.

     36.  OPTION TO RENEW II.  In the event Tenant exercises Option to Renew I,
          -------------------
provided Tenant is not in Default of any of the terms and conditions herein and
subject to the tenant at the north end of the Building DRIASI's right to expand,
Tenant shall have the Option to Renew the Lease Agreement for an additional
period of 3 years by giving Landlord 150 days advance written notice of it's'
intention to renew. Landlord shall respond to Tenants' request to exercise this
Option to Renew within ten (10) business days. All terms and conditions of said
renewal term shall be the same as stated herein except Base Rent for said
additional renewal term shall be $25,354.00 per month.

                                       15
<PAGE>

IN WITNESS WHEREOF, the parties hereto have executed this Lease Agreement this
3rd day of August, 1999.


     CENTURY 2000 PARTNERS, LLP              A BUSINESS CONFERENCE CALL, INC.
     A Minnesota General Partnership              A Minnesota Corporation

By:  /s/ David Kordonowy                     By:        /s/ RFM
     ------------------------------------         ------------------------------

Its: Partner                                 Its: ______________________________
     ------------------------------------

Date:     8-3-99                             Date:      8/3/99
     ------------------------------------         ------------------------------

                                             Federal Tax I.D.#:_________________

                                             State Tax I.D. #:__________________

                                       16
<PAGE>

                                  EXHIBIT "A"


                   LEASEHOLD IMPROVEMENT SPECIFICATIONS FOR:
                       A BUSINESS CONFERENCE CALL, INC.
                       --------------------------------
                          ARBORETUM BUSINESS PARK II

             To Be Based on a Final, Mutually Agreed to Space Plan
                                 July 28, 1999


ARCHITECTURAL       :    An allowance has been included for all Architectural
                         drawings including consultation, revisions, delivery
                         costs and prints.

ENGINEERING         :    No allowance has been included for Engineering of any
                         Mechanical, Electrical, Plumbing or Structural
                         drawings.

BUILDING PERMIT     :    Provided by Steiner Development, Inc. No SAC or WAC
                         charges have been included if required.

SUPERVISION         :    Daily site supervision shall be provided by a Steiner
                         Development Construction Superintendent or a working
                         Construction Foreman.

FINAL CLEAN-UP      :    A one time Final Clean-Up shall be provided by Steiner
                           --------
                         Development. Included are vacuum carpets, damp mop any
                         vinyl flooring. Clean restrooms complete, all glass
                         surfaces, wipe down Millwork.

COMMON LABOR        :    Construction clean-up shall be provided for the
                         duration of the project.

DUMPSTER            :    Construction dumpsters will be utilized to dispose of
                         construction related debris and demo materials.

MISC. STEEL         :    6" x 7' pipe bollards at and Service Door Stair cases
                         as required by code

LUMBER              :    Provide all Lumber, backing, glue and fasteners
                         required to install all Millwork, Cabinets and Hardware
                         included in this specification.

CARPENTRY           :    Provide Carpentry Labor to install all Doors, Millwork,
                         Shelves, backing, Bathroom Partitions and Hardware
                         included on the final plan and specification.

CABINETS            :    10' Upper Cabinet and Base Cabinet with P.-lam. top in
                         Break Room. Tenant to share 50% of the cost of upgraded
                         cabinet over and above the 10' building standard
                         cabinet as shown per plan.

                         P.-lam., wall hung ADA approved restroom vanities in
                         restrooms

MILLWORK            :    All new doors per the final Architectural plan door
                         schedule

                         New doors shall be 3' 0" x 6' 8" Oak flush, solid core,
                         with Oak Ranch casings on both sides, prepped for 2
                         3/4" backset Schlage hardware

                         New rated doors shall be 3' 0" x 6' 8" Hollow Metal
                         knock down frames with oak flush doors, prepped for 2
                         3/4" backset Schlage hardware, brushed chrome hinges
                         and strike.

                         The following Rooms receive 12" building standard
                         sidelights: #103, 104, 105, 107, 108 and 125.
<PAGE>

ROOFING             :    Roofing in all new Mechanical, Electrical and Plumbing
                         vent penetrations are included.

OVERHEAD DOORS      :    All new Overhead Doors, if any, per the Architectural
                         plan door schedule. Overhead doors will be glazed in
                         with windows per Building Standard window package per
                         Architectural plan.

HARDWARE            :    All new Hardware per code and the Architectural plan
                         door schedule

                         Door Hardware
                         -------------

                         New doors shall receive Schlage lever handle passage
                         sets in a brushed chrome finish except as shown in
                         Locksmith Section below.

                         -    Door hinges shall be brushed chrome

                         -    Door closures shall be provided on all exterior
                              doors, restroom doors and doors with a fire
                              rating. Any additional door closures can be added
                              at a cost of $125.00/each

                         Restroom Hardware
                         -----------------

                         Door Hardware as required per code including, closures,
                         ADA approved grab bars and toilet paper and paper towel
                         dispensers are included

LOCKSMITH           :    Rekeying of all perimeter entrance doors included with
                         10 keys. Room #103, 104, 105, 107, 108 and 125 to
                         receive Schlage locksets.

DRYWALL             :    Construct all Drywall walls per final plan and
                         specifications. Rooms #125 and 136 to receive
                         fiberglass sound batt insulation in the walls at
                         Landlord's sole cost and expense. The following Rooms
                         shall also receive fiberglass sound insulation batts
                         and the cost of said insulation shall be shared 50%-50%
                         by Landlord and Tenant: Rooms 103, 104, 105, 107, 108,
                         109, 110, 117, 128, 135.

                         Restroom walls to be framed to 1' above suspended
                         ceiling height and shall receive a drywall ceiling at
                         8'. All restroom walls and ceiling shall be fully
                         insulated with fiberglass sound attenuation batts

                         Vestibule walls to be framed to 1' above suspended
                         ceiling height and shall receive a drywall ceiling at
                         8'0" a.f.f.

                         Warehouse, if any, to be fire taped only

CERAMIC             :    New Restrooms
                         -------------

                         Floors to receive a Group 1, 2" x 2" Ceramic floor tile

                         New Restroom walls and base to receive a Group 1, 4
                         1/4" x 4 1/4" Ceramic wall tile. Wall tile to be
                         installed to 46 3/4" high, with a 24" return at the lav
                         and a 60" return at the watercloset. A mirror knotch
                         shall be provided above each lav or vanity (must be
                         field verified). Restroom walls to receive ceramic tile
                         accent strip as shown per plan

                         New entry vestibules to receive a building standard
                         ceramic tile selected by Steiner Development, Inc.

ACOUSTICAL CEILING  :    Provide and install an Armstrong 704A, Minatone, 2' x
                         2' x 5/8", Cortega, Tegular or approved equivalent with
                         white grid at 10' - 0-1/2" off the floor at the entire
                         office area
<PAGE>

FLOORING            :    An allowance of $14.00 per yard for material, tax and
                         installation has been included for new carpet per the
                         Architectural plan for the entire office area

                         VCT as specified below can be substituted for carpet
                         where desired

                              VCT Specifications:  Tarket Commercial Floor Tile,
                              standard series including Classics, Keystones and
                              Structures. 1/8" x 12" x 12" vinyl composition
                              tile or equivalent

                         Anti-static 1'x1' VCT is included in Room #117

BASE                :    4" New carpet base has been included over all new
                         carpeted areas

                         4" Vinyl base has been included over all new VCT floors

PAINT               :    Custom stain, seal and varnish all doors and millwork
                         to building standard specifications

                         All office walls to receive 2 coats of flat latex paint

                         Warehouse/Storage walls, if any, to receive no finish

FIRE PROTECTION     :    Office areas to include a wet pipe system in accordance
                         with NFPA 13, Light Hazard Occupancy

                         Office sprinklering heads to be chrome semi-recessed

                         Warehouse areas, if any, to include a wet pipe system
                         in accordance with NFPA 13 Ordinary Hazard Occupancy

PLUMBING            :    Install all plumbing including water, waste and vent
                         per final plan and specification

                         -    All new and existing vent piping in a return air
                              plenum space shall be cast iron per code

                         Add 1 - utility sink per plan

                         Add 1 - cooler type drinking fountain adjacent to each
                                 restroom core

                         All new water closets to be 1.6 gallon pressure assist
                         flush per code

                         Floor drains to be provided at each new restroom, new
                         utility sink, new water heater

                         Stainless steel, double basin kitchen style sink with
                         single handle goose neck faucet and hot/cold water
                         service is included for the Break Room Area

HVAC                :    New combination heat / cool rooftop units have been
                         included to provide HVAC for the office area based on
                         the final plan

                         Restroom exhaust fans are included for each restroom

                         -    All new gas pipe blocking shall receive rigid
                              insulation roof penetration

ELECTRICAL          :    The following electrical allowances have been included:
<PAGE>

                         -    (1) duplex outlet per 80 square has been included
                              for the hardwalled office area.
                         -    (2) duplex outlets will be provided for (2) Tenant
                              provided fax machines. (2) duplex outlets will be
                              provided for (2) Tenant provided copy machines.
                         -    (250) 2'x4' lay-in 18 cell parabolic fixtures has
                              been included for the office area per plan.
                              Janitor closet to receive 2'x4' acrylic lense lay-
                              in fixture.
                         -    (26) 20 amp circuits in open office landscape for
                              initial cubicle and workstation installation.
                              Wiring of workstations and installation of power
                              poles by Tenant.
                         -    Empty conduit will be provided above the ceiling
                              grid for future expansion of workstation/cubicle
                              area. Future wiring through conduit and
                              workstations by Tenant.
                         -    Restrooms receive 4' acrylic lens wrap fixtures
                              per plan
                         -    One (1) phone/data opening per office or
                              conference room
                         -    One (1) GFI outlet in each restroom
                         -    Break Room Area to receive (4outlets for (4)
                              tenant provided microwave ovens at the cabinets
                              area, and (4) outlets for tenant provided vending
                              machines/refrigerators
                         -    (2) 8' strip fluorescent strip fixtures in
                              warehouse/storage
                         -    Single pole switches as required by plan.
                         -    Emergency and exit lighting to code

NOT INCLUDED        :    *    Any mandated requirements by the City of
                              Chanhassen Building or Fire Department such as but
                              not limited to the following:

                         -    Relocating of A Business Conference Call's
                              equipment including setting, installing,
                              mechanical, plumbing, communications and
                              electrical connections are not included unless
                              specifically called out in this specification.

                         -    Scrubbing or waxing of any floor surfaces
                         -    Soap dispensers or sanitary napkin dispensers
                         -    Signage
                         -    Tenant furniture, reception station or work
                              stations
<PAGE>

                                  EXHIBIT "B"



                       [Graphic depiction of Floor Plan]
<PAGE>

                                  EXHIBIT "C"


                  [Graphic depiction of Site/Landscape Plan]
<PAGE>

                                  EXHIBIT "D"


                       [Graphic depiction of Site Plan]
<PAGE>

                                  EXHIBIT "E"


                [Graphic depiction of Parking Space Allocation]