<PAGE>   1
                                                                EXHIBIT 10.17


                               SUBLEASE AGREEMENT

         THIS SUBLEASE AGREEMENT ("Sublease") is made and entered into this
______ day of June, 1996, by and between STANLEY MARTIN COMPANIES, INC., a
Maryland corporation, herein referred to as "Tenant", and MHM SERVICES, INC., a
Delaware corporation, herein referred to as "Subtenant".

                                   RECITALS:

         A.      Tenant is leasing a part of the premises located on the Eighth
Floor in the building (the "Building") having an address of 8000 Towers
Crescent Drive, Vienna, Virginia 22182, located in the County of Fairfax,
Virginia, under a certain Agreement of Lease dated September 15, 1988, by and
between J.T.L. Tycon Towers I Limited Partnership, predecessor in interest to
the current landlord, Tycon Tower I Investment Limited Partnership
("Landlord"), and the Tenant (said Agreement of Lease, as amended from time to
time prior to or subsequent to the dated hereto, is hereinafter referred to as
the "Lease"), said Lease being hereby incorporated herein by reference for all
purposes.

         B.      Tenant wishes to sublease a portion of the premises covered by
the Lease (the "Premises") to the Subtenant on the terms stated herein.

                                   AGREEMENT

         NOW, THEREFORE, in consideration of the premises and the mutual
rights, obligations and covenants contained herein, the parties agree as
follows:

         1.      SUBLEASED PREMISES USE.  The Tenant hereby subleases to the
Subtenant, and the Subtenant hereby hires and leases from the Tenant, a portion
of the Premises containing approximately 6597 rentable square feet, as more
particularly described on Exhibit "A" attached hereto and incorporated herein
by reference, together with use in common with Tenant of the reception and
lobby area in the Premises as shown on Exhibit "A" attached hereto, which area
is herein collectively referred to as the "Subleased Premises".  Subtenant
shall also be entitled, without charge other than the Base Rent (as hereinafter
defined) and the Additional Rent (as hereinafter defined) as set forth herein,
to (i) non-exclusive use of twenty-three (23) non-reserved parking spaces in
the parking garage which are allocated to Tenant under the Lease, (ii) use of
the conference room in the Premises on a quarterly basis for Subtenant's Board
of Directors meetings and for other meetings from time to time at such times to
be coordinated with Tenant's use of such conference room and which does not
interfere with Tenant's ordinary use of the conference room (Tenant agrees not
to interfere with Subtenant's previously scheduled use of the conference room),
and (iii) the services of Tenant's receptionist for the purposes of greeting
and announcing visitors to the Subtenant.  Subtenant agrees to use the
Subleased Premises only for general office purposes and otherwise strictly in
accordance with the terms, covenants and conditions contained in the Lease.
<PAGE>   2
         2.      TERM:  The term of this Sublease shall commence on August 15,
1996 (the "Commencement Date") and shall expire on December 31, 1998 (the
"Term"), unless sooner terminated as provided herein.

         3.      RENT.  The total base rent ("Base Rent") for the initial year
of the Term commencing on September 1, 1996, shall be One Hundred Forty-Nine
Thousand One Hundred and No/100 Dollars ($149,100.00), payable in equal monthly
installments of Twelve Thousand Four Hundred Twenty-Five and No/100 Dollars
($12,45.00) per month which shall be due and payable on the first day of each
calendar month during the Term.  On the first business day after Subtenant
receives notice that Tenant has obtained Landlord's approval of this Sublease
pursuant to Section 24 hereof, Subtenant shall deliver to Tenant payment in the
amount of $6,815.00 which constitutes the Base Rent for the time period
beginning on the Commencement Date and ending August 31, 1996, together with
payment of the Base Rent for the final month of the Term of this Sublease (in
the amount of $13,181.00).  In the event that this Sublease terminates prior to
the final month of the Term, then such payment of Base Rent for the final month
of the Term shall be handled in the same manner as the Security Deposit is
handled pursuant to Section 4 below (i.e., returned to Subtenant or applied by
Tenant to any damages, injuries, expenses or liabilities incurred by Tenant as
a result of a default by Subtenant hereunder).  The Base Rent for each year of
the Term of this Sublease shall increase on an annual basis by an amount equal
to three percent (3%) of the Base Rent payable for the just-completed year of
the Term, with the first Base Rent adjustment occurring effective as of
September 1, 1997, with an additional such adjustment being made effective
September 1, 1998.  All payments of Base Rent, Additional Rent and all other
payments required to be made by Subtenant to Tenant hereunder shall be
delivered to Tenant by check or bank wire transfer, as Subtenant may elect, at
8000 Towers Crescent Drive, The Eighth Floor, Vienna, Virginia 22182, or (if by
bank wire transfer) to the bank account designated by Tenant.

         4.      SECURITY DEPOSIT.  On the first business day after Subtenant
receives notice that Tenant has obtained Landlord's approval of this Sublease
pursuant to Section 24 hereof, Seven Thousand and No/100 Dollars (#37,000.00).
Upon the occurrence of a default hereunder by Subtenant, then Tenant, without
prejudice to any other remedy which may be available to Tenant hereunder or
under applicable law, may apply such Security Deposit to any damages, injuries,
expenses or liabilities incurred by Tenant as a result of such default (but
such Security Deposit shall not be considered as liquidated damages int he
event of such default by Subtenant).  In the event that Tenant so applies the
Security Deposit during the term of this Sublease but does not terminate this
Sublease as a result of such default by Subtenant, then within ten (10) days
after a written demand by Tenant to Subtenant, Subtenant shall restore the
Security Deposit to its original amount of $37,000.00.  Tenant shall not be
required to hold the Security Deposit in a separate account and the Security
Deposit may be commingled with other funds of Tenant, and Tenant shall not be
required to accrue or pay interest on the Security Deposit.  So long as
Subtenant is not in default under this Sublease, two-thirds (2/3) of the
Security Deposit then being held by Tenant shall be applied on a pro rata basis
of the Base Rent payable of reach of the months of June through November,
inclusive, of 1998.  If Subtenant fully performs all of its covenants,
obligations and agreements under the terms of this Sublease, the remaining
portion of
<PAGE>   3
the Security Deposit shall be returned to Subtenant within thirty (30) days
after the expiration of the Term hereof.

         5.      NET EASE.  This Sublease shall be deemed and construed to be a
"net lease", and Subtenant shall pay the Base Rent, Additional Rent and other
payments hereunder to Tenant absolutely net throughout the Term, free of any
charges, assessments, impositions, or deductions of any kind and without
abatement, deduction or setoff.  To the extent that Landlord has agreed to
furnish certain utilities and services to Tenant, such as air conditioning,
heat, elevators, electric current, water and other utility services, Tenant
agrees that to the extent such services are furnished to the Subleased Premises
that Subtenant shall be entitled to the use and benefit of such services;
provided, however, that Tenant shall not have any liability or responsibility
to Subtenant for the quality of such utilities and services.  Subtenant agrees
to reimburse Tenant for all amounts charged to Tenant as a result of "after
hour" services to the Subleased Premises ordered by Subtenant, including heat,
air conditioning, electricity and other services, within ten (10) days after
delivery by Tenant to Subtenant of a request for payment, which request shall
include a copy of any invoice for such services received by Tenant from
Landlord.

         6.      ADDITIONAL RENT.  The Lease requires Tenant to make payments
to Landlord on the basis of increases in operating expenses and real estate
taxes.  Subtenant agrees to pay Tenant additional ren t(the "Additional Rent")
equal to Subtenant's pro rata share of such increases above the amount payable
by Tenant to Landlord during the Base Year (as hereinafter defined).  For
purposes of this Paragraph 6, the Base year shall be calendar year 1996, and
Subtenant's pro rata share shall be the product of (i) the amount of such
increases above the Base Year payable from time to time by Tenant under the
Lease, multiplied by (ii) a fraction, the numerator of which shall be 7,100
square feet, and the denominator of which shall be the total number of square
feet of rentable area leased from time to time by Tenant pursuant to the Lease.
Payments of Additional Rent by Subtenant shall commence on January 1, 1997, and
shall be paid to Tenant on the same basis and at the same time that Tenant is
required to pay such additional rent to Landlord under the Lease.  Tenant
agrees to furnish to Subtenant a copy of any statement received by Tenant from
Landlord showing the amounts of additional rent to be paid by Tenant under the
Lease and a statement setting forth the calculation of Subtenant's pro rata
share of such amounts to be paid by Subtenant as Additional Rent.  Tenant
agrees to reimburse to Subtenant a pro rata share of any reimbursements made by
Landlord to Tenant that result from any overpayments of additional rent made by
Tenant during the preceding calendar year which apply tot he time period during
the Term hereof within thirty (30) days after Tenant receives such
reimbursement from Landlord.

         7.      LATE FEES.  If any installment of Base Rent, Additional Rent
or other sums are not paid by Subtenant within five (5) business days of the
date when the same becomes due, there shall be imposed a late payment charge of
five percent (5%) of the amount of such installment, which charge shall be
immediately due and payable.  All payments received shall be applied first to
unpaid late charges, if any, commencing with the earliest late charge imposed,
then to any delinquent installments of Base Rent and/or Additional Rent,
commencing with the earliest installment then unpaid, and finally to the most
current installment of Base Rent and/or Additional Rent due.  No express
designation of any payment by the Subtenant shall vary the
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application of payment as aforesaid.  Nothing herein shall be deemed to limit
or supersede the remedies of Tenant as set forth herein.

         8.      TERMS OF LEASE.  All of the terms, provisions, covenants and
conditions of the Lease are incorporated herein by reference and are hereby
made a part hereof and are superior to this Sublease.  As between the parties
hereto, Subtenant hereby assumes all of the obligations and liabilities of the
Tenant with respect to the Subleased Premises, as the "tenant" under the Lease,
other than the obligation to pay Landlord rent or other payments thereunder,
and Tenant shall have all of the rights of the Landlord under the Lease as
against Subtenant with respect to Subtenant's occupancy and use of the
Subleased Premises, except (i) to the extent such rights are modified by or
inconsistent with the terms of this Sublease, (ii) Tenant shall have no right
to terminate this Sublease under Section 29 of the Lease, and (iii) Tenant's
liability to Subtenant shall not be limited by Section 16(c) of the Lease.
Subtenant expressly covenants and agreed with Tenant that Subtenant will not
commit or permit to occur any event which would constitute an event of default
under the Lease or omit to do anything with respect to the Subleased Premises
which Subtenant is obligated to do under the terms of this Sublease or under
the terms of the Lease which would constitute and event o default under the
Lease.

         9.      DEFAULT OF SUBTENANT.  If Subtenant shall (i) fail to pay any
monthly installment of Base Rent or any installment of Additional Rent or shall
fail to timely make any other payment required by the terms and provisions of
this Sublease (although no legal or formal demand has been made therefor) and
such default continues for five (5) days after the date that such payment is
due and payable, or (ii) violate or fail to perform any other terms,
conditions, covenants or agreements herein made by Subtenant and such default
continues for ten (10) days after delivery of written notice thereof by Tenant
or Subtenant, or (iii) abandon or vacate the Subleased Premises, or (iv) make
or consent to an assignment for benefit of creditors or a common law
composition of creditors, or a receiver of Subtenant's assets is appointed, or
Subtenant files a voluntary petition in any bankruptcy or insolvency
proceeding, or an involuntary petition in any bankruptcy or insolvency
proceeding si filed against Subtenant and not discharged by Subtenant within 30
days, or Subtenant is adjudicated a bankruptcy, or (v) default under the terms,
covenants and conditions of the Lease which Subtenant is required to perform or
observe pursuant to the terms of this Sublease and the expiration of any
applicable notice and/or cure period provided under the Lease, then, and in any
of said events, this Sublease, at the option of Tenant, shall cease and
terminate, and Tenant shall provide notice to quit and Tenant may proceed to
recover possession under and by virtue of the provisions of the laws of the
Commonwealth of Virginia or by such other proceedings, including re-entry and
possession, as may be applicable, and Tenant shall further be entitled to
recover all damages from Subtenant and to pursue any other rights at law or in
equity which may be available to Tenant as a result of such default by
Subtenant.  All rights, powers and remedies of Tenant shall be cumulative, and
the exercise of any one or more of such rights or remedies shall not impair
Tenant's right to exercise any other right or remedy, either concurrently or at
a later time.

         10.     CONDITION OF SUBLEASED PREMISES.  The Subtenant has examined
and knows the condition of the Subleased Premises, and hereby acknowledges that
the Subleased Premises are in good order and repair and acceptable to him,
subject to the Renovation Work (as
<PAGE>   5
defined below) to be performed by Tenant pursuant to Section 11 below.
Subtenant expressly acknowledges that it is accepting possession of the
Subleased Premises in an "As Is, Where Is" condition without any warranties,
express or implied, and without Tenant being required to make any alterations,
improvements, repairs or decorations whatsoever to the Subleased Premises
either at the time possession is delivered to Subtenant or during the entire
term of this Sublease except for the Renovation Work.  Subtenant agrees to keep
the Subleased Premises in good repair, order and condition in compliance with
the Lease, and to yield up the Subleased Premises in such condition.  Upon the
termination or expiration of this Sublease, Subtenant will remove all of
Subtenant's property from the Subleased Premises on or before the expiration or
termination date an deliver possession of the Subleased Premises, thoroughly
clean and in good condition, reasonable wear and tear excepted, and in
compliance with the Lease and such reasonable conditions as may be set forth by
Tenant.  Subtenant will be liable for any damages Tenant may suffer due to
Subtenant's failure to leave the Subleased Premises in the condition required
under this Section 10.

         11.     RENOVATION WORK ALTERATIONS.  Within forty-five (45) days
after full execution hereof, Tenant agrees to perform the following work on the
Subleased Premises:

                 (i)      Tenant shall paint or "touch up", as appropriate, the
walls within the Subleased Premises and shall clean the carpet and perform
appropriate cleaning of the wood floor within he Subleased Premises;

                 (ii)     Tenant shall obtain a space plan from Bert Primo,
submit such plan to Subtenant for its approval (which approval shall not be
unreasonably withheld or delayed) and reconfigure the Subleased Premises
generally as shown on Exhibit "B" attached hereto and incorporated herein by
reference (if Subtenant does not approve such plans and Subtenant and Tenant
are unable to reach an agreement on the plans on or before July 11, 1996, then
either party shall be entitled to terminate this Sublease by delivery of
written notice thereof to the other party and thereupon the Security Deposit
and all installments of Base Rent previously paid by Subtenant to Tenant shall
be promptly refunded to Subtenant); and

                 (iii)    Tenant will remove the peach colored wallpaper within
the Subleased Premises and repaint the subject wall.

         The work to be performed by Tenant pursuant to subparagraphs (i), (ii)
and (iii) above is herein sometimes collectively referred to as the "Renovation
Work".  In the event that the total costs and expenses incurred by Tenant for
performing the Renovation Work described in subparagraphs (ii) and (iii) above
exceeds Sixteen Thousand and No/10-0 Dollars ($16,000.00), in the aggregate,
then such excess costs and expenses shall be payable by Subtenant to Tenant
within five (5) business days after completion by Tenant of such Renovation
Work and delivery by Tenant to Subtenant of an invoice and other reasonable
supporting evidence reflecting the total costs and expenses incurred by Tenant
for such Renovation Work.  The failure by Subtenant to pay such excess amount
within such five (5) business day period shall be a default hereunder by
Subtenant.  Tenant intends to use it sown laborers, carpenters and other
workers to complete the Renovation Work.  If Tenant's costs and expenses for
the Renovation Work is less than the
<PAGE>   6
aggregate amount of Sixteen Thousand and No/100 Dollars ($16,000.00), then such
difference shall be promptly paid by Tenant to Subtenant.

         In addition to the Renovation Work to be performed by Tenant
hereunder, Tenant, at its expense, agrees to remove the signage presently
located on the wall behind the receptionist's desk area in the reception area
and replace such signage with new sinange reasonably acceptable to Tenant and
Subtenant identifying the location of Subtenant and Tenant within the Premises.
Tenant shall also use reasonably diligent efforts to cause Landlord to display
in the main lobby of the Building a building directory listing for Subtenant
and a reasonable number of Subtenant's key personnel as reasonably specified by
Subtenant.  In addition, Subtenant, at its sole cost and expense, will install
any telephone lines necessary to connection the receptionist's phone system to
the phone system to be operated by Subtenant within the Subleased Premises so
that the receptionist can appropriately announce the arrival of visitors of
Subtenant.  Subtenant shall have the right to obtain access to the Building and
Subleased Premises no later than July 22,m 1996, for the purpose of installing
a telephone system, computer network wiring, and electrical outlets for
Subtenant's use, which installation will be subtenant's sole cost, risk and
expense and which system shall remain the property of Subtenant; provided,
however, that the indemnification provisions of Section 19 below shall apply to
such installation.

         Subtenant shall not make or install any additions, renovations,
alterations, improvements or other changes in or to the Subleased Premises,
including (without limitation) the walls, floors, ceilings and fixtures located
therein without first obtaining the prior written consent of Tenant and without
first obtaining any approvals required from the Landlord pursuant to the terms
and condition of the Lease.

         1.2     LIENS.  Subtenant shall keep the Subleased Premises free and
clear of all liens arising out of any work performed, materials furnished, or
obligations incurred by Subtenant or at Subtenant's request, and shall cause
any such liens which may be filed to be released within fifteen (15) days of
the filing thereof.

         13.     ASSIGNMENT AND SUBLETTING.  The Subtenant shall not assign, or
further sublet the Subleased Premises or any part hereof without the prior
written consent of Tenant, which may be withheld in Tenant's sole and absolute
discretion.  Any attempted assignment or sublet by Subtenant without obtaining
Tenant's prior written consent as required pursuant to this Section 13 shall
constitute a default hereunder by Subtenant and shall automatically be null and
void and of no force or effect.

         14.     TERMINATION OF LEASE.  In the event that the Lease terminates
for any reason, this Sublease Agreement shall automatically terminate upon such
termination or cancellation of the Lease, and all obligations hereunder of the
parties hereto shall be extinguished as of the termination date other than
those obligations that expressly survive termination hereunder.  As soon as
reasonably practical after Tenant becomes aware of any fact or circumstance
that could result in a termination of the Lease prior to December 31, 1998,
including (without limitation) a notice from Landlord regarding a default under
the Lease by Tenant, then Tenant shall give written notice to Subtenant of such
fact or circumstance and
<PAGE>   7
thereafter will keep Subtenant reasonably informed of any material developments
relating thereto.  In addition, Tenant shall not reach an agreement with
Landlord regarding any such early termination without Subtenant receiving at
least sixty (60) days prior notice of the termination date.

         15.     INSURANCE.  The Subtenant agrees to provide and keep in effect
during the Term hereof and pay for a public liability insurance policy and a
property damage insurance policy secured from an insurance company or companies
reasonably acceptable to Tenant, in which the limits shall not be less than the
amounts required under the Lease, and the protection for Tenant arising out of
the use and occupancy of the Subleased Premises, including the Building and
common areas, shall be equivalent to the protection obtained by Landlord from
Tenant under Section 14 of the Lease.  Such insurance policies shall name
Tenant and Landlord as additional insureds thereunder, shall contain such other
provisions in favor of Tenant and Landlord as Tenant's insurance policies are
required to contain in favor of Landlord pursuant to the Lease, and shall
provide that such policies cannot be canceled without thirty (30) days prior
written notice to Tenant and Landlord.  Subtenant shall provide Tenant with
receipts evidencing payment of premiums for all such insurance policies and
evidence of policy renewals at least thirty (30) days prior to the expiration
date of each policy.  Tenant is to be furnished a copy of said policy or
suitable evidence of insurance, and failure to provide such insurance policy
within fifteen (15) days prior to the Commencement Date shall be considered an
event of default giving Tenant the right to terminate this Sublease pursuant to
the terms of this Sublease Agreement.

         16.     ACCESS.  At all times during the term of this Sublease, Tenant
and its officers, employees and representatives and Landlord and its officers,
employees and representatives shall have the right to enter upon the Subleased
Premises in accordance with the terms and conditions set forth in the Lease for
the purpose of inspecting or making repairs, alterations or additions to the
Subleased Premises or to make certain that all covenants and agreements of this
Sublease are being kept and maintained by Subtenant.

         17.     HOLDING OVER.  In the event that Subtenant does not fully
vacate the Subleased Premises on the expiration date of this Sublease (or
earlier termination date), then Subtenant shall be deemed to be a tenant at
sufferance and Tenant shall be entitled to pursue any cause of action which may
be available to Tenant at law or in equity to cause Subtenant to fully vacate
the Subleased Premises, and Subtenant shall be liable for rent during such
holdover period in an amount equal to One Hundred Fifty Percent (150%) of the
Base Rent in effect during the last month of the term of this Sublease,
calculated on a per diem basis.

         18.     GOVERNING LAW.  Subtenant hereby indemnifies, defends and
holds Tenant harmless from and against any and all actions, claims, demands,
damages, costs, expenses and liabilities (including, without limitation,
reasonable attorneys' fees) asserted against, imposed upon or incurred by
Tenant by reason of (a) any violation caused, suffered or permitted by
Subtenant, its agents, servants, employees or invitees, of any of the terms,
covenants or conditions of the Lease, and (b) any damage or injury to persons
or property occurring upon or in connection with the use or occupancy by
Subtenant of the Subleased Premises.
<PAGE>   8
         20.     NOTICE.  Whenever under this Sublease Agreement a provision is
made for notice of any kind, such notice shall be deemed sufficient notice and
service thereof, effect upon receipt or refusal to accept delivery, if such
notice is delivered by hand or mailed to Subtenant or Tenant at the following
addresses:

                 Tenant:          Stanley Martin Companies, Inc.
                                  8000 Towers Crescent Drive, Eighth Floor
                                  Vienna, Virginia  22182
                                  Attention: Martin K. Alloy, President

                 Subtenant:       Until August 14, 1996:
                                  MHM Services, Inc.
                                  7601 Lewinsville Road
                                  McLean, Virginia  22102
                                  Attention: Michael S. Pinkert, President and
                                                   Chief Executive Officer

                                  After August 14, 1996:
                                  MHM Services, Inc.
                                  8000 Towers Crescent Drive, Eighth Floor
                                  Vienna, Virginia  22182
                                  Attention: Michael S. Pinkert, President and
                                                   Chief Executive Officer

Such mailing shall be by certified mail, return receipt requested.

         21.     COMMISSION.  Tenant shall pay commissions in connection with
this Sublease to Grubb and Ellis and to Zalco Realty Incorporated
(collectively, the "Brokers") in accordance with separate agreements entered
into by Tenant with the Brokers, such commissions to be payable upon the
Commencement Date so long as Subtenant takes possession of the Subleased
Premises and pays the initial installment of the Base Rent and all other sums
payable at or prior to the Commencement Date.  Except for such commission to be
paid to Brokers by Tenant, Tenant and Subtenant each warrant to the other that
they have dealt with no agent or broker with respect to the transaction
contemplated by this Sublease.  In the event that any claim for commission or
finder's fee is brought by any person or entity whatsoever as a consequence of
the transaction contemplated hereby and as a result of any action or omission
of either Tenant or Subtenant, then Tenant or Subtenant (whichever party is
alleged to have committed the act or omission which is the basis for such
claim), as the case may be, shall indemnify, defend and hold harmless the other
party against any loss, cost or expense of any nature, including (without
limitation) court costs and reasonable attorneys' fees arising as a consequence
of such claim for the commission or fee.

         22.     TIME.  Time is of the essence with respect to all time periods
under this Sublease.
<PAGE>   9
         23.     LITIGATION.  In the event that any party is required to resort
to litigation to enforce its rights under this Sublease, Tenant and Subtenant
agree that any judgment awarded to the prevailing party shall include all
litigation expenses of the prevailing party, including (without limitation)
reasonable attorneys' fees and court costs.

         24.     CONSENT OF LANDLORD.  Subtenant acknowledges that it has been
advised by Tenant that Tenant must obtain the prior approval of Landlord for
this Sublease and the Renovation Work, and this Sublease is subject to Tenant
obtaining Landlord's approval (such approval of this Sublease shall include
Subtenant's listing in the Building directory as described in Section 11
hereof).  Tenant agrees to diligently pursue obtaining such approval on or
before July 21, 196, then either party may terminate this Sublease by delivery
of written notice thereof to the other party and thereupon the Security Deposit
and all installments of Base Rent previously paid by Subtenant to Tenant shall
be promptly refunded to Subtenant.

         25.     PARTIES BOUND.  Subject to the restrictions on assignment and
subletting by Subtenant pursuant to Section 13 hereof, this Sublease shall
inure to the benefit of and be binding upon the parties hereto and their
respective successors and assigns.

         26.     COUNTERPART ORIGINALS.  This Sublease may be executed in
multiple original counterparts, each of which shall be deemed to be an original
but all of which, taken together, shall be deemed to be one (1) Sublease.

         WITNESS the following signatures and seals:


                                  SUBTENANT:

                                  MHM SERVICES, INC.


                                  By:                          (SEAL)
                                     --------------------------
                                       Michael S. Pinkert, President
                                       and Chief Executive Officer


                                  TENANT:

                                  STANLEY MARTIN COMPANIES, INC.


                                  By:                          (SEAL)
                                     --------------------------
                                       Martin K. Alloy, President
<PAGE>   10
                                LIST OF EXHIBITS


Exhibit "A"               Plan Showing Subleased Premises

Exhibit "B"               Reconfiguration Plan for Subleased Premises