Document:

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                             AGREEMENT RELATING TO
                             ---------------------
                            FOURTH RENEWAL OF LEASE
                            -----------------------

     This AGREEMENT RELATING TO FOURTH RENEWAL OF LEASE (this "Agreement") is
made and entered into by and between SWEETWELL INDUSTRIAL ASSOCIATES, L.P., a
Delaware limited partnership ("Landlord"), and GROUP TECHNOLOGIES CORPORATION, a
Florida corporation ("Tenant"), and is effective on the date executed by the
last of Landlord and Tenant (the "Effective Date").

                                   RECITALS:
                                   ---------

     A. John Hancock Mutual Life Insurance Company, as Landlord, and Honeywell
Inc, as Tenant, entered into that certain Lease Agreement effective as of the
27th day of April, 1979, relating to certain premises legally described in the
Lease Agreement (the "Premises").

     B. Included within the Premises is an approximately 308,320 square foot
building (the "Building") with a street address of 10901 Malcolm McKinley Drive,
Tampa, Florida.

     C.  Landlord is successor in interest to John Hancock Mutual Life Insurance
Company, as Landlord under the Lease, and Tenant is successor in interest to
Honeywell Inc., as Tenant under the Lease.

     D. The original Lease Agreement was amended by that certain First Amendment
to Lease Agreement made as of the 25th day of October, 1991, between Landlord
and Tenant (the "First Amendment'). The original Lease. Agreement, as amended by
the First Amendment, is referred to below as the "Lease".

     E. The term of the Lease currently expires on April 26, 2002, subject
to two (2) remaining five-year renewal options in favor of Tenant to renew the
Lease for a fourth renewal term to expire on April 26, 2007 (the "Fourth Renewal
Term") and a fifth renewal term to expire on April 26, 2012 (the "Fifth Renewal
Term").

     F. The parties are currently in the process of attempting to agree upon the
Basic Rent for the Fourth Renewal Term, in accordance with the procedures set
forth in Section 19 of the Lease.

     G. Landlord and Tenant wish to agree upon the Basic Rent for the Fourth
Renewal Term and extend the Lease for the Fourth Renewal Term, on the terms set
out in this Agreement.
<PAGE>

                          STATEMENT OF THE AGREEMENT
                          --------------------------

     In consideration of the premises, the mutual covenants set forth below, and
other good and valuable consideration, the receipt and sufficient of which is
hereby acknowledged, Landlord and Tenant agree as follows:

     1.  Recitals and Definitions.  The above Recitals are true and correct and
         ------------------------
are a part of this Agreement. Terms used in this Agreement without definition
which are defined in the Lease will have the same meaning in this Agreement as
in the Lease.

     2.  Term Amended.  The Term of the Lease is hereby extended for the Fourth
         -------------
Renewal Term, so that it expires on April 26, 2007, subject to Tenant's right to
further extend the Term for the Fifth Renewal Term.

     3.  Basic Rent.  Basic Rent under the Lease for the Fourth Renewal Term
         ----------
shall be as follows:

                             Rate Per
                            Square Foot       Annual Basic          Monthly
Period                    (308,320 sq. ft.)      Rent             Installment
                          ----------------

April 27, 2002 to April        $3.70          $1,140,784.00       $ 95,065.33
      26, 2003
April 27, 2003 to April        $3.81          $1,174,699.00       $ 97,891.60
      26, 2004
April 27, 2004 to April        $3.92          $1,208,614.40       $100,717.87
      26, 2005
April 27, 2005 to April        $4.03          $1,242,529.60       $103,544.13
      26, 2006
April 27, 2006 to April        $4.15          $1,279,528.00       $106,627.33
      26, 2007

     4. Improvements to Premises.  Tenant agrees to make the following repairs,
        ------------------------
alterations or improvements to the Premises:

(a) Within 48 months following the Effective Date, Tenant shall, at its cost,
replace the approximately 144,200 square foot portion of the roof of the
Building that was not replaced by Tenant in 1998, Tenant shall accomplish this
work in a good, workmanlike manner, comparable with the approximately 172,800
square foot portion of the roof replaced or repaired by Tenant in 1998.

(b) Within 48 months following the Effective Date, Tenant shall, at its expense,
paint the exterior of the entire Building. Prior to painting, Tenant shall, to
the extent in need of replacement, remove the existing vertical masonry wall
expansion
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joints and install new expansion joint sealant material. The need for
replacement shall be determined by Law Engineering and Environmental Services,
Inc. or another engineering firm reasonably acceptable to Landlord.

          (c) Within 120 days following the Effective Date, Tenant shall, at its
cost, perform the following work with respect to the approximately 172,800
square foot portion of the roof replaced or repaired by Tenant in 1998; repair
one lead flashing at plumbing vent pipe, reflash roof drains in accordance with
the manufacturer's specifications, fill all pitch pockets with modified roof
cement, and seal open fishmouths in base flashing lap joints.

          (d) Within 12 months following the Effective Date, Tenant shall, at
its cost, perform the work described on the attached Exhibit "A".
                                                             ---

          (e) During the period beginning on the Effective Date and ending on
the last day of the Fourth Renewal Term, Tenant, at its expense, shall, with
respect to the HVAC package units on, in or at the Building, take reasonable
care of them, keep them in good order, maintenance and condition, and make all
necessary repairs to them. The term "repairs" shall include replacement or
renewals when necessary, and all such repairs shall be equal in quality and
class to the original work.

          (f) Prior to the first day of the 60th month following the Effective
Date, Tenant shall, at its cost, sealcoat the entire parking lot and re-stripe
all parking spaces.

     Landlord and Tenant acknowledge that a dispute currently exists between
them relative to whether Tenant is in full compliance with its maintenance and
repair obligations under the Lease. Without admitting any failure to comply with
its maintenance and repair obligations under the Lease, Tenant has, as part of
this Agreement, agreed to make the repairs, alterations or improvements
described in this Section. To the extent that any of the repairs, alterations or
improvements described in this Section are required under the Lease to be made
in a period of time shorter than that provided in this Section, Landlord agrees
that Tenant shall have the period set out in this Section to make such repairs,
alterations or improvements. Landlord and Tenant acknowledge that Landlord has
sent and Tenant has received several default notices relating to an alleged
failure to maintain the Premises in accordance with the Lease and that this
Agreement is intended to provide for the cure of the defaults alleged in those
notices. Accordingly, Landlord withdraws such default notices effective as of
the Effective Date.

     5.  Brokerage.  Each party represents and warrants to the other that no
         ---------
broker has been involved in the transaction evidenced by this Agreement, except
for Julien J. Studley, Inc. ("Broker"), whose commission shall be paid by
Landlord pursuant to a separate agreement with Broker.
<PAGE>

     6.  Agreement Limited. Except as provided for in this Amendment, the Lease
         -----------------
remains unaffected and the Lease remains unmodified and in full force and
effect.

WITNESSES:                            "LANDLORD":

                                      SWEETWELL INDUSTRIAL
                                      ASSOCIATES, L.P.,
                                      a Delaware limited partnership

/s/ Robert Albert
----------------------------          By: Capital Properties Associates IX LP,
Print Name: Robert Albert                 General Partner
            ----------------

                                              /s/ E. Robert Roskind
                                          By: ____________________________
/s/ David Walsh                                   E. Robert Roskind
----------------------------                       General Partner
Print Name: David Walsh
            ----------------

                                      Date: November 1, 2000

                                      "TENANT":

                                      GROUP TECHNOLOGIES
                                      CORPORATION,
                                      a Florida corporation

/s/ Janis S. Beal                     By:   /s/ James G. Cooke
-----------------------------               -----------------------------
Print Name:   Janis S. Beal           Name: James G. Cooke
            -----------------               -----------------------------
                                      Its:  President & CEO
/s/ Lauri K. Deschamps                      -----------------------------
-----------------------------
Print Name: Lauri K. Deschamps        Date: October 26, 2000
            ------------------                      --<PAGE>

                             AMENDMENT OF SUBLEASE
                             ---------------------

     THIS AMENDMENT OF SUBLEASE ("Amendment") is made and entered into as of the
6th day of August, 1998, by and between PHARMACIA & UPJOHN COMPANY, a Delaware
corporation with an address of 7000 Portage Road, Kalamazoo, Michigan 49001-0199
("Pharmacia") and METRUM-DATATAPE, INC., a Delaware corporation, formerly known
as Metrum-D, Inc., with an address of 455 Fourth Avenue, Suite 350, Louisville,
Kentucky 40202 ("Metrum-Datatape") (collectively "the Parties") with reference
to the following facts:

                                   RECITALS

     A.  The Parties entered into that certain Sublease dated as of November 14,
1997 for the Sublease of certain premises located at 605 East Huntington Drive,
Monrovia, California, more particularly described therein (the "Sublease").

     B.  The Parties now wish to amend the Sublease, as more fully set forth
herein.

     NOW, THEREFORE, in consideration of the foregoing and mutual covenants and
conditions hereinafter set forth, the Parties hereto agree as follows:

     1.  Defined Terms.  Except as otherwise indicated, capitalized terms in
         --------------
this Amendment shall have the same meaning as in the Sublease.

     2.  Description of Premises.  The Premises described in Exhibit "B"
         ------------------------
attached to the Sublease is hereby deleted and Exhibit "A" attached hereto
substituted in its place.  Such revised description of the Premises shall be
deemed to be the Premises for all purposes under the Sublease as of the date
hereof.  The Premises shall be deemed to be 69,954 rentable square feet.

     3.  Rent, Prorations and Expenses.  The first two paragraphs of Section 4
         ------------------------------
of the Sublease are hereby deleted and restated in their entirety as follows:

     "As rent for the Premises, Metrum-Datatape shall pay directly to Pharmacia
     the following sums:  (i) a basic monthly rental of $47,295 per month (in
     lieu of the "Basic Monthly Rental" due under Section 4.1 of the Lease), and
     (ii) fifty-two and fifty-five one hundredths percent (52.55%) of any and
     all rent (other than "Basic Monthly Rental" but including "Additional
     Rental" and any other sums due pursuant to Section 7.2 of the Lease), or
     other sums due from Pharmacia under the Lease, commencing on the Effective
     Date.  Notwithstanding the foregoing, if, after March 1, 1999, monitoring
     of the utility submetering by Pharmacia indicates that Metrum-Datatape's
     use of the HVAC system is not consistent (by more than ten percent (10%))
     with its "pro rata share" of overall Building expenses, Pharmacia shall
     equitably adjust the pro rate share of the payment due for the Building's
     HVAC maintenance agreement based upon such actual usage.

     Notwithstanding the foregoing, Metrum-Datatape shall not be liable or
     responsible for (i) any annual pro rata share of any property taxes
     required to be paid by Pharmacia under the Lease exceeding $144,000 per
     year, or (ii) any capital expenses related to or associated with the
     building systems (boilers, cooling towers, etc.).  Metrum-Datatape will be
     responsible for all expenses of and relating to the relocation of the prior
     operations of Datatape purchased by
<PAGE>

     Metrum-Datatape into the Premises. Pharmacia will cooperate with and assist
     Metrum-Datatape, without incurring undue expense, in any effort to reduce
     the property taxes on the Leased Premises and will assist in obtaining any
     consent of Landlord in connection therewith."

     4.  Parking.  Exhibit "C" attached to the Sublease is hereby deleted and
         --------
replaced in its entirety by Exhibit "B" attached hereto, which, in addition to
the parking rights granted in Section 5(ii) hereof, allows Metrum-Datatape the
exclusive use of all parking spaces surrounding the Building (including for the
use as a location for the Storage Facilities, as defined below, and at least two
(2) handicapped spaces), other than twenty (20) parking spaces on the surface
lot surrounding the Building.  The twenty (20) spaces are currently labeled as
spaces 135 and 136 (handicapped spaces), 137-149 (located in front of the
Building) and 85-89 (located on the west side of the Building).  Such twenty
(20) spaces shall not be used by Metrum-Datatape or its employees, suppliers,
shippers, contractors, customers or invitees.

     5.  License to Use Parking and Other Common Areas.  In addition to Metrum-
         ----------------------------------------------
Datatape's rights to use and occupy the Premises as specified herein, and
subject to Section 4 hereof and such rules and regulations of the Building as
may be applicable, Pharmacia hereby grants Metrum-Datatape, for the benefit of
Metrum-Datatape and its employees, suppliers, shippers, contractors, customers
and invitees, during the term of this Sublease, a non-exclusive license for
access, ingress, egress, use and enjoyment, in common with others entitled to
such license, to:  (i) all public or common areas and facilities outside the
Metrum-Datatape Premises and within the exterior boundary of the Leased
Premises, including the main lobby of the Building, common corridors and
hallways, stairwells, passenger elevators, restrooms, loading and unloading
areas, trash areas, roadways, sidewalks, walkways, parkways, driveways and
landscaped areas (but excluding the aerial walkway to the parking garage across
Huntington Drive, "Common Areas"), as they exist from time to time, subject to
any rights, powers and privileges reserved by Pharmacia under the terms hereof,
and (ii) at least fifty (50) spaces on the first level in the parking structure
located across Huntington Drive from the Building but within the Leased Premises
(but excluding the aerial walkway to the parking garage across Huntington
Drive).  Under no circumstances shall the license herein granted to use the
Common Areas be deemed to include the right to store any property, temporarily
or permanently, in the Common Areas, except for the existing temporary storage
containers (the "Storage Facilities") located in a portion of the surface lot at
the rear of the Building and the temporary storage facility located in the
parking structure, which must be removed at the expiration or earlier
termination of the Sublease consistent with the repair and restoration
obligations Metrum-Datatape has under the Sublease and Article XIV of the Lease.
Additionally, Metrum-Datatape acknowledges that Room 257F is to be Common Areas
and utilized by Pharmacia and GNP as the Building facilities office.  In the
event that Pharmacia determines that a larger facilities office for the Building
is desirable, Pharmacia reserves the right to convert Room 261 to Common Area to
be used as additional facilities office for the Building, with a subsequent
proportionate adjustment in the "basic monthly rental" and "pro rata share"
figures and with Metrum-Datatape paying for the actual cost of such conversion,
as estimated in the Scope of Work and Construction Bid from Heil Construction,
Inc. attached hereto as Exhibit "D" and made a part hereof.  Pharmacia further
reserves the right to access those portions of the Premises containing telephone
switches, utility meters, connections and equipment and other equipment
servicing the entire Building for repair and maintenance purposes.  Finally,
Metrum-Datatape acknowledges and agrees that Pharmacia shall have the right to
lease to third parties (other than GNP or Metrum-Datatape) eighty-one parking
spaces relating to the parking structure (thirty-three (33) on the upper deck
and forty-eight (48) on the surface lot between the parking structure ramp and
Huntington Drive), notwithstanding anything in the Sublease or this Amendment to
the contrary.
<PAGE>

     6.  Test Chamber Movement.  Metrum-Datatape shall be responsible for moving
         ----------------------
the test chamber from its existing location in the Leased Premises to the
location previously approved by Pharmacia within the Premises in full compliance
with all applicable governmental and Landlord requirements; provided, however,
that such relocation shall be at the sole cost and expense of Pharmacia, but not
to exceed $92,000, unless the lowest reasonable and responsible bid received for
such moving services plus other related out-of-pocket costs (including without
limitation removal of existing concrete slab, asphalt patching, paint touch-up
and interior piping demolition) is greater than such amount, in which case
Pharmacia shall pay the greater amount, but not to exceed $110,000.  Further,
upon the expiration or earlier termination of the Sublease, Metrum-Datatape
shall be solely responsible, at its own cost and expense, for the removal of any
external or interior piping and concrete slab, asphalt patching, paint touch-up
and repair of any damage or penetrations of walls caused by such chamber at or
external to the new location within the Leased Premises, in addition to any
other repair or restoration obligations it may have under the Sublease.

     7.  Acknowledgment of Shared Premises.  Metrum-Datatape acknowledges that
         ----------------------------------
the balance of the Leased Premises (other than the Common Areas) (the "GNP
Premises") have been subleased by Pharmacia to GNP Computers, Inc. ("GNP").
Metrum-Datatape agrees to cooperate in all reasonable respects with GNP in the
use and occupancy of the Building, including without limitation, the use of
Common Areas, the sharing of the lobby, the maintenance of the card access
security system (in both the Building and the parking structure) and parking
areas.  Metrum-Datatape agrees to report any disputes between GNP and Metrum-
Datatape to Pharmacia for prompt resolution.  Metrum-Datatape further
acknowledges that Pharmacia has retained Investment Development Services, Inc.
("IDS") as its property manager for the Building and agrees to cooperate in all
reasonable respects with IDS in its management of the Building on Pharmacia's
behalf.  Finally, Metrum-Datatape acknowledges and agrees that the license
previously granted pursuant to Section 2(b) of the Sublease for use of the GNP
Premises has been revoked and that Metrum-Datatape has no further right or
interest in such GNP Premises.

     Notwithstanding the foregoing, the indemnification of Pharmacia set forth
in Section 5 of the Sublease shall continue in full force and effect as to the
GNP Premises and the Common Areas for any liabilities, claims, costs, expenses,
actions or causes of action incurred under the Sublease and related to the GNP
Premises and the Common Areas between the Effective Date and the date hereof.

     8.  Furniture, Fixtures and Equipment.  Metrum-Datatape may continue to use
         ----------------------------------
Pharmacia's leased furniture, fixtures and equipment currently located in the
Premises, together with the existing AT&T System 75 PBX, Audix Voice Mail System
and Microcall Call Accounting System, the maintenance and repair of which shall
be at Metrum-Datatape's sole cost and expense through the expiration date of the
Sublease.  Metrum-Datatape and Pharmacia shall agree on a detailed inventory of
such furniture, fixtures and equipment within thirty (30) days' of the date
hereof.

     9.  Pharmacia's Representations.  Pharmacia represents and warrants that,
         ----------------------------
to the best of its knowledge:  (a) the Lease is in full force and effect; (b)
Pharmacia is not in default under the terms of the Lease or any assignment or
sublease thereof and there has been no event or omission which, with the passage
of time or the giving of notice, would constitute such a default by Pharmacia
under the Lease or any such assignment or sublease; (c) Pharmacia is not aware
of any default under the terms of the Lease by Landlord; (d) Pharmacia has not
assigned the Lease nor currently sublet the Premises to any party other than
Metrum-Datatape; (e) it has the full right, power and authority to enter into
this Amendment without the prior consent of any other person, corporation or
governmental entity (except for the approval
<PAGE>

of the Landlord to this Amendment as provided for in Section 3(a)(ii) of the
Sublease); and (f) the lease term set forth in Article 2 of the Lease expires
February 1, 2004.

     10. Metrum-Datatape's Representations.  Metrum-Datatape represents and
         ----------------------------------
warrants to Pharmacia that:  (a) it is a corporation, validly existing and in
good standing under the laws of Delaware and has the power to own its own
property and is authorized to do business in California; (b) it has the full
right, power and authority to enter into this Sublease without the prior consent
of any other person, corporation or governmental entity; and (c) the execution
of this Amendment and the performance of the Sublease will not cause the breach
of Metrum-Datatape's Bylaws or Certificate of Incorporation or any agreement to
which Metrum-Datatape is or may be bound.

     11. Miscellaneous
         -------------

         (a) Continuing Effectiveness of Agreement.  Except as expressly
             --------------------------------------
modified by this Amendment, the Agreement shall continue unmodified and in full
force and effect, and this Amendment shall be subject to all of the unmodified
terms of the Agreement, which terms are hereby incorporated by this reference.

         (b) Counterparts and Execution.  This Amendment may be executed in
             ---------------------------
multiple counterparts, each of which shall be deemed an original Amendment, but
all of which constitute one (1) Amendment, binding on the parties hereto.  The
signature of any party hereto to any counterpart hereof shall be deemed a
signature to, and may be appended to, any other counterpart.

         (c) Applicable Law.  This Amendment shall be governed by and construed
             ---------------
in accordance with the laws of the State of California.

         (d) Entire Agreement Modification.  This Amendment contains the entire
             -----------------------------
understanding among the parties hereto and supersedes any prior or
contemporaneous understanding, correspondence, negotiations, or agreements
between them respecting the within subject matter other than the Sublease.  No
alteration, modification or interpretation of this Amendment shall be binding
unless in writing and signed by both parties.  The execution of this Amendment
by Pharmacia shall in no way constitute a waiver by Pharmacia of any rights or
remedies it has against Metrum-Datatape for any defaults or breaches by Metrum-
Datatape occurring prior to the date hereof under the Sublease.

         (e) Exhibits.  All exhibits attached to and to which reference is made
             --------
in, this Amendment are incorporated into, and shall be deemed a part of, this
Amendment.
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed as of the date and year first above written.

                              "Pharmacia"

                              PHARMACIA & UPJOHN COMPANY,
                              A Delaware corporation

                              By:     /s/ Ted P. Pokorski
                                 ---------------------------------
                                      Its:  Manager, Office
                                      Facilities & Real Estate

                              METRUM-DATATAPE, INC.,
                              A Delaware corporation

                              By:  /s/ Richard L. Davis
                                 ---------------------------------
                                   Its:  Vice President

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