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                                                                 EXHIBIT 10.49
                     CUMMINGS PROPERTIES MANAGEMENT, INC.
                                 STANDARD FORM
                                 -------------
                               COMMERCIAL LEASE

In consideration of the covenants herein contained, Cummings Properties
Management, Inc., hereinafter called LESSOR, does hereby lease to
Boston Communications Group, Inc. (a MA corp.), hereinafter called LESSEE, the
following described premises, hereinafter called the leased premises:
approximately 5,739 square feet (including 3.25% common area) at 100 Sylvan
Road, Suite 650, Woburn, MA 01801

TO HAVE AND HOLD the leased premises for a term of five (5) years commencing at
noon on October 15, 1998 and ending at noon on October 14, 2003 unless sooner
terminated as herein provided. LESSOR and LESSEE now covenant and agree that the
following terms and conditions shall govern this lease during the term hereof
and for such further time as LESSEE shall hold the leased premises.

1. RENT. LESSEE shall pay to LESSOR base rent at the rate of one hundred
fourteen thousand four hundred ninety three (114,493.00) U.S. dollars per year,
drawn on a U.S. bank, payable in advance in monthly installments of $9,541.08 on
the first day in each calendar month in advance, the first monthly payment to be
made upon LESSEE's execution of this lease, including payment in advance of
appropriate fractions of a monthly payment for any portion of a month at the
commencement or end of said lease term. All payments shall be made to LESSOR or
agent at 200 West Cummings Park, Woburn, Massachusetts 01001, or at such other
place as LESSOR shall from time to time in writing designate. If the "Cost of
Living" has increased as shown by the Consumer Price Index (Boston
Massachusetts, all Items, all urban consumers), U.S. Bureau of Labor Statistics,
the amount of base rent due during each calendar year of this lease and any
extensions thereof shall be annually adjusted in proportion to any increase in
the Index. All such adjustment shall take place with the rent due on January 1
of each year during the lease term. The base month from which to determine the
amount of each increase in the Index shall be January 1998, which figure shall
be compared with the figure for November 1998, and each November thereafter to
determine the percentage increase (if any) in the base rent to be paid during
the following calendar year. In the event that the Consumer Price Index as
presently computed is discontinued as a measure of "Cost of Living" changes, any
adjustment shall then be made on the basis of a comparable index than in general
use.

2.  SECURITY DEPOSIT.  LESSEE shall pay to LESSOR a security deposit in the
amount of nineteen thousand (19,000.00) dollars upon the execution of this
lease by LESSEE, which shall be held as security for LESSEE's performance as
herein provided and refunded to LESSEE without interest at the end of this lease
subject to LESSEE's satisfactory compliance with the conditions hereof. LESSEE
may not apply the security deposit to payment of the last month's rent, in the
event of any default or breach of this lease by LESSEE, LESSOR shall immediately
apply the security deposit first to any unamortized improvements completed for
LESSEE's occupancy, then to offset any outstanding invoice or other payment due
to LESSOR, with the balance applied to outstanding rent. If all or any portion
of the security deposit is applied to cure a default or breach during the term
of the lease. LESSEE shall be responsible for restoring said deposit forthwith
and failure to do so shall be considered a substantial default under the lease.
LESSEE's failure to remit the full security deposit or any portion thereof when
due shall also constitute a substantial lease default.  Until such time as
LESSEE pays the security deposit and first month's rent, LESSOR may declare this
lease null and void for failure of consideration.

3.   USE OF PREMISES. LESSEE shall use the leased premises only for the purpose
of executive and administrative offices.

4.   ADDITIONAL RENT.  LESSEE shall pay to LESSOR as additional rent a
proportionate share (based on square footage leased by LESSEE as compared with
the total leaseable square footage of the building of which the leased premises
are a part) of any increase in the real estate taxes levied against the land and
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building of which the leased premises are a part, whether such increase is
caused by an increase in the tax rate, or the assessment on the property, or a
change in the method of determining real estate taxes. LESSEE shall make payment
within thirty days (30) of written notice from LESSOR that such increased taxes
are payable, and any additional rent shall be prorated should the lease
terminate before the end of any tax year. The base from which to determine the
amount of any increase in taxes shall be the rate and the assessment in effect
as of July 1, 1998.

5.   UTILITIES.  LESSOR shall provide equipment per LESSOR's building standard
specifications to heat the leased premises in season and to cool all office
areas between May 1 and November 1. LESSEE shall pay all charges for utilities
used on the leased premises, including electricity, gas, oil, water and sewer.
LESSEE shall pay the utility provider or LESSOR, as applicable, for all such
utility charges as determined by separate  meters serving the leased premises
and/or as a proportionate share of the utility charges for the building if not
separately metered. LESSEE shall also pay LESSOR a proportionate share of any
other fees and charges relating in any way to utility use at the building. No
plumbing, construction or electrical work of any type shall be done without
LESSOR's prior written approval and the appropriate municipal permit.

6.   COMPLIANCE WITH LAWS. LESSEE acknowledges that no trade, occupation,
activity or work shall be conducted in the leased premises or use made thereof
which may be unlawful, improper, noisy, offensive, or contrary to any applicable
statute, regulation, ordinance or bylaw. LESSEE shall keep all employees working
in the leased premises covered with Worker's Compensation Insurance and shall
obtain any licenses and permits necessary for LESSEE's occupancy. LESSEE shall
be responsible for causing the leased premises and any alterations by LESSEE
which are allowed hereunder to be in full compliance with any applicable
statute, regulation, ordinance or bylaw.

7.   FIRE, CASUALTY, EMINENT DOMAIN. Should a substantial portion of the leased
premises, or of the property of which they are a part, be substantially damaged
by fire or other casualty, or be taken by eminent domain, LESSOR may elect to
terminate this lease. When such fire, casualty, or taking renders the leased
premises substantially unsuitable for their intended use, a just and
proportionate abatement of rent shall be made, and LESSEE may elect to terminate
this lease if: (a) LESSOR fails to give written notice within thirty (30) days
of intention to restore the leased premises, or (b) LESSOR fails to restore the
leased premises to a condition substantially suitable for their intended use
within ninety (90) days of said fire, casualty or taking. LESSOR reserves all
rights for damages or injury to the leased premises for the taking by eminent
domain, except for the damage to LESSEE's property or equipment.

8.   FIRE INSURANCE. LESSEE shall not permit any use of the leased premises
which will adversely affect or make voidable any insurance on the property of
which the leased premises are a part, or on the contents of said property, or
which shall be contrary to any law or regulation from time to time established
by the Insurance Services Office (or successor), local Fire Department, LESSOR's
insurer, or any similar body. LESSEE shall on demand reimburse LESSOR, and all
other tenants, all extra insurance premiums caused by LESSEE's use of the leased
premises. LESSEE shall not vacate the leased premises or permit same to be
unoccupied other than during LESSEE's customary non-business days or hours.

9.   MAINTENANCE OF PREMISES. LESSOR will be responsible for all structural
maintenance of the leased premises and for the normal daytime maintenance of all
space heating and cooling equipment, sprinklers, doors, locks, plumbing, and
electrical wiring, but specifically excluding damage caused by the careless,
malicious, willful, or negligent acts of LESSEE or others, chemical, water or
corrosion damage from any source, and maintenance of any non "building standard"
leasehold improvements, LESSEE agrees to maintain at the expense all other
aspects of the leased premises in the same condition as they are at the
commencement of the term or as they may be put in during the term of this lease,
normal wear and tear and damage by fire or other casualty only excepted, and

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whenever necessary, to replace light bulbs, plate glass and other glass therein,
acknowledging that the leased premises are now in good order and the light bulbs
and glass whole. LESSEE will promptly control or vent all solvents, degreasers,
smoke, odors, etc, and shall not cause the area surrounding the leased premises
to be in anything other than a neat and clean condition, depositing all waste in
appropriate receptacles. LESSEE shall be solely responsible for any damage to
plumbing equipment, sanitary lines, or any other portion of the building which
results from the discharge or use of any acid or corrosive substance by LESSEE.
LESSEE shall not permit the leased premises to be overloaded, damaged, stripped
or defaced, nor suffer any waste, and will not keep animals within the leased
premises. If the leased premises include any wooden mezzanine type space, the
floor capacity of such space is suitable only for office use, light storage or
assembly work. If the leased premises are carpeted or partially carpeted, LESSEE
will protect carpet with plastic or masonite chair pads under any rolling
chairs. Unless heat is provided at LESSOR's expense, LESSEE shall maintain
sufficient heat to prevent freezing of pipes or other damage. Any increase in
air conditioning equipment or electrical capacity, or any installation and/or
maintenance of equipment which is necessitated by some specific aspect of
LESSEE's use of the leased premises shall be at LESSEE's expense. All
maintenance provided by LESSOR shall be during LESSOR's normal business hours.

10.  ALTERATIONS. LESSEE shall not make structural alterations or additions
of any kind to the leased premises, but may make nonstructural alterations
provided LESSOR consents thereto in writing. All such allowed alterations shall
be at LESSEE's expense and shall conform with LESSOR's construction
specifications. If LESSOR provides any services or maintenance for LESSEE in
connection with such alterations or otherwise under this lease, any just invoice
will be promptly paid.  LESSEE shall not permit any mechanics' liens, or similar
liens, to remain upon the leased premises in connection with work of any
character performed or claimed to have been performed at the direction of LESSEE
and shall cause any such lien to be released or removed forthwith without cost
to LESSOR. Any alterations or additions shall become part of the leased premises
and the property of LESSOR. Any alterations completed by LESSOR shall be
LESSOR's "building standard" unless noted otherwise. LESSOR shall have the right
at any time to change the arrangement of parking areas, stairs, walkways or
other common areas of the building.

11.  ASSIGNMENT OR SUBLEASING. LESSEE shall not assign this lease or sublet
or allow any other firm or individual to occupy the whole or any part of the
leased premises without LESSOR's prior written consent. Notwithstanding such
assignment or subleasing, LESSEE and GUARANTOR shall remain liable to LESSOR for
the payment of all rent and for the full performance of the covenants and
conditions of this lease. LESSEE shall pay LESSOR promptly for legal and
administrative expenses incurred by LESSOR in connection with any consent
requested hereunder by LESSEE.

12.  SUBORDINATION. This lease shall be subject and subordinate to any and
all mortgages and other instruments in the nature of a mortgage, now or at any
time hereafter, and LESSEE shall, when requested, promptly execute and deliver
such written instruments as shall be necessary to show the subordination of this
lease to sold mortgages or other such instruments in the nature of a mortgage.

13.  LESSOR'S ACCESS. LESSOR or agents of LESSOR may at any reasonable time
enter to view the leased premises, to make repairs and alterations as LESSOR
should elect to do for the leased premises, the common areas or any other
portions of the building of which the leased premises are a part, to make
repairs which LESSEE is required but has failed to do, and to show the leased
premises to others.

14.  SNOW REMOVAL. The plowing of snow from all roadways and
unobstructed parking areas shall be at the sole expense of LESSOR.

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The control of snow and ice on all walkways, steps and loading areas serving the
leased premises and all other areas not readily accessible to plows shall be the
sole responsibility of LESSEE. Notwithstanding the foregoing, however, LESSEE
shall hold LESSOR and OWNER harmless from any and all claims by LESSEE's agents,
representatives, employees callers or invitees for damage or personal injury
resulting in any way from snow or ice on any area involving the leased premises.

15.  ACCESS AND PARKING.  LESSEE shall have the right without additional
charge to use parking facilities provided for the leased premises in common with
others entitled to the use thereof. Said parking areas plus any stairs,
walkways, elevators or other common areas shall in all cases be considered a
part of the leased premises to the extent that they are utilized by LESSEE, or
LESSEE's employees, agents, callers or invitees. LESSEE will not obstruct in any
manner any portion of the building or the walkways or approaches to said
building, and will conform to all rules and regulations now or hereafter made by
LESSOR for parking, and for the care, use, or alteration of the building, it's
facilities and approaches. LESSEE further warrants that LESSEE will not permit
any employee or visitor to violate this or any other covenant or obligation of
LESSEE. No unattended parking will be permitted between 7:00 PM and 7:00 AM
without LESSOR's prior written approval, and from December 1 through March 31
annually, such parking shall be permitted only in those areas specifically
designated for assigned overnight parking. Unregistered or disabled vehicles, or
storage trailers of any type, may not be parked at any time, LESSOR may tow, at
LESSEE's sole risk and expense, any misparked vehicle belonging to LESSEE or
LESSEE's agents, employees, invitees or callers, at any time, LESSOR shall not
be responsible for providing any security services for the leased premises.

16.  LIABILITY.  LESSEE shall be solely responsible as between LESSOR and
LESSEE for deaths or personal injuries to all persons whomsoever occurring in or
on the leased premises (including any common areas that are considered part of
the leased premises hereunder) from whatever cause arising, and damage to
property to whomsoever belonging arising out of the use, control, condition or
occupation of the leased premises by LESSEE; and LESSEE agrees to indemnify and
save harmless LESSOR and OWNER from any and all liability, including but not
limited to costs, expenses, damages, causes of action, claims, judgments and
attorneys' fees caused by or in any way growing out of any matters aforesaid,
except for death, personal injuries or property damage directly resulting from
the sole negligence of LESSOR.

17.  INSURANCE.  LESSEE will secure and carry at its own expense a
comprehensive general liability policy insuring LESSEE, LESSOR and OWNER against
any claims "based" on bodily injury (including death) or property damage arising
out of the condition of the leased premises (including any common areas that are
considered part of the leased premises hereunder) or their use by LESSEE, such
policy to insure LESSEE, LESSOR and OWNER against any claim up to One Million
(1,000,000) Dollars in the case of any one accident involving bodily injury
(including death), and up to One Million (1,000,000) Dollars against any claim
for damage to property. LESSOR and OWNER shall be included in each such policy
as additional insureds using ISO Form CG 20 26 11 85 or some other form approved
by LESSOR. LESSEE will file with LESSOR prior to occupancy certificates and any
applicable riders or endorsements showing that such insurance is in force, and
thereafter will file renewal certificates prior to the expiration of any such
policies. All such insurance certificates shall provide that such policies shall
not be cancelled without at least ten (10) days prior written notice to each
insured. In the event LESSEE shall fail to provide or maintain such insurance at
any time during the term of this lease, then LESSOR may elect to contract for
such insurance at LESSEE's expense.

18. SIGNS. LESSOR authorizes, and LESSEE at LESSEE's expense agrees to
erect, signage for the leased premises in accordance with LESSOR's building
standards for style, size, location, etc. LESSEE shall obtain the prior written
consent of LESSOR before erecting any sign on the leased premises, which consent
shall include approval as to size, wording, design and location. LESSOR may
remove and dispose of any sign not approved, erected or displayed in conformance
with this lease.

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19. BROKERAGE. LESSEE warrants and represents to LESSOR that LESSEE has
dealt with no broker or third person with respect to this lease and LESSEE
agrees to indemnify LESSOR against any brokerage claims arising by virtue of
this lease. LESSOR warrants and represents to LESSEE that LESSOR has employed no
exclusive broker or agent in connection with the letting of the leased premises.

20. DEFAULT AND ACCELERATION OF RENT. In the event that: (a) any assignment for
the benefit of creditors, trust mortgage, receivership or other insolvency
proceeding shall be made or instituted with respect to LESSEE or LESSEE's
property; (b) LESSEE shall default in the observance or performance of any of
LESSEE's covenants, agreements, or obligations hereunder, other than substantial
monetary payments as provided below, and such default shall not be corrected
within ten (10) days after written notice thereof: or (c) LESSEE vacates the
leased premises, then LESSOR shall have the right thereafter, while such default
continues and without demand or further notice, to re-enter and take possession
of the leased premises, to declare the term of this lease ended, and to remove
LESSEE's effects, without being guilty of any manner of trespass, and without
prejudice to any remedies which might be otherwise used for arrears of rent or
other default or breach of the lease. If LESSEE shall default in the payment of
the security deposit, rent, taxes, or any substantial invoice lot goods, and/or
services or other sum herein specified, and such default shall continue for ten
(10) days after written notice thereof, and, because both parties agree that
nonpayment of said sums when due is a substantial breach of the lease, and,
because the payment of rent in monthly installments is for the sole benefit and
convenience of LESSEE, then in addition to the foregoing remedies the entire
balance of rent which is due hereunder shall become immediately due and payable
as liquidated damages, LESSOR, without being under any obligation to do so and
without thereby waiving any default, may remedy same for the account and at the
expense of LESSEE. If LESSOR pays or incurs any obligations for the payment of
money in connection therewith, such sums paid or obligations incurred plus
interest and costs, shall be paid to LESSOR by LESSEE as additional rent. Any
sums received by LESSOR from or on behalf of LESSEE at any time shall be applied
first to any unamortized improvements completed for LESSEE's occupancy, then to
effect any outstanding invoice or other payment due to LESSOR, with the balance
applied to outstanding rent. LESSEE agrees to pay reasonable attorney's fees
and/or administrative costs incurred by LESSOR in enforcing any or all
obligations of LESSEE under this lease at any time. LESSEE shall pay LESSOR
interest at the rate of eighteen (18) percent per annum on any payment from
LESSEE to LESSOR which is past due.

21.  NOTICE. Any notice from LESSOR to LESSEE relating to the leased
premises or to the occupancy thereof shall be deemed duly served when left at
the leased premises addressed to LESSEE, or served by constable, or sent to the
leased premises by certified mail, return receipt requested, postage prepaid,
addressed to LESSEE. Any notice from LESSEE to LESSOR relating to the leased
premises or to the occupancy thereof shall be deemed duly served when served by
constable, or delivered to LESSOR by certified mail, return receipt requested,
postage prepaid, addressed to LESSOR at 200 West Cummings Park, Woburn, MA 01801
or at LESSOR's last designated address. No oral notice or representation shall
have any force or effect. Time is of the essence in service of any notice.

22.  OCCUPANCY. In the event that LESSEE takes possession of said leased
premises prior to the start of said term, LESSEE will perform and observe all of
LESSEE's covenants from the date upon which LESSEE takes possession except the
obligation for the payment of extra rent for any period of less than one month,
LESSEE shall not remove LESSEE's goods or property from the leased premises
other than in the ordinary and usual course of business, without having first
paid and satisfied LESSOR for all rent which may become due during the entire
term of this lease. LESSOR shall have the right to relocate LESSEE to another
facility upon prior written notice to LESSEE and on terms comparable to those
herein. In the event that LESSEE continues to occupy or control all or any part

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of the leased premises after the agreed termination of this lease without the
written permission of LESSOR, then LESSEE shall be liable to LESSOR for any and
all lose, damages or expenses incurred by LESSOR, and all other terms of this
lease shall continue to apply except that rent shall be due in full monthly
installments at a rate of one hundred fifty (150) percent of that which would
otherwise be due under this lease. It being understood between the parties that
such extended occupancy is as a tenant at sufferance and is solely for the
benefit and convenience of LESSEE and as such has greater rental value. LESSEE's
control or occupancy of all or any part of the leased premises beyond upon on
the last day of any monthly rental period shall constitute LESSEE's occupancy
for any entire additional month, and increased rent as provided in this section
shall be due and payable immediately in advance. LESSOR's acceptance of any
payments from LESSEE during such extended occupancy shall not alter LESSEE's
status as a tenant at sufference.

23.  FIRE PREVENTION. LESSEE agrees to use every reasonable precaution
against fire and agrees to provide and maintain approved, labeled fire
extinguishers, emergency lighting equipment, and exit signs and complete any
other modifications within the leased premises as required or recommended by the
Insurance Services Office (or successor organization), OSHA, the local Fire
Department, or any similar body.

24.  OUTSIDE AREA.  Any goods, equipment or things of any type or description
held or stored in any common area without LESSOR's prior written consent shall
be deemed abandoned and may be removed at by LESSOR at LESSEE's expense without
notice. LESSEE shall maintain a building standard size dumpster in a location of
approved by LESSOR, which dumpster shall be provided and serviced at LESSEE's
expense by whichever disposal firm may from time to time be designated by
LESSOR. Alternatively, if a shared dumpster or compactor is provided by LESSOR,
LESSEE shall pay its proportionate share of the costs associated therewith.

25.  ENVIRONMENT. LESSEE will so conduct and operate the leased premises as
not to interfere in any way with the use and enjoyment of other portions of the
same or neighboring buildings by others by reason of odors, smoke, smells,
noise, pets, accumulation of garbage or trash, vermin or other pests, or
otherwise, and will at its expense employ a professional pest control service
if necessary. LESSEE agrees to maintain efficient and effective devices for
preventing damage to heating equipment from solvents, degreasers, cutting oils,
propellants, etc. which may be present at the leased premises. No hazardous
materials or wastes shall be stored, disposed of, or allowed to remain at the
leased premises at any time, and LESSEE shall be solely responsible for any and
all corrosion or other damage associated with the use, storage and/or disposal
of same by LESSEE.

26.  RESPONSIBILITY. Neither LESSOR nor OWNER shall be held liable to anyone
for loss or damage caused in any way by the use, leakage, seepage or escape of
water from any source, or for the cessation of any service rendered customarily
to said premises or buildings, or agreed to by the terms of this lease, due to
any accident, the making of repairs, alterations or improvements, labor
difficulties, weather conditions, mechanical breakdowns, trouble or scarcity in
obtaining fuel, electricity, service or supplies from the sources from which
they are usually obtained for said building, or any cause beyond LESSOR's
immediate control.

27.  SURRENDER. LESSEE shall at the termination of this lease remove all of
LESSEE's goods and effects from the leased premises. LESSEE shall deliver to
LESSOR the leased promises and all keys and locks thereto, all fixtures and
equipment connected therewith, and all alterations, additions and improvements
made to or upon the leased promises, whether completed by LESSEE, LESSOR or
others, including but not limited to any offices, partitions, window blinds,
floor coverings (including computer floors), plumbing and plumbing fixtures, air
conditioning equipment and ductwork or any type, exhaust fans or heaters, water
coolers, burglar alarms, telephone wiring, telephone equipment, air or gas

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distribution piping, compressors, overhead cranes, hoists, trolleys or
conveyors, counters, shelving or signs attached to walls or floors, all
electrical work, including but not limited to lighting fixtures of any type,
wiring, conduit, EMT, transformers, distribution panels, bus ducts, raceways,
outlets and disconnects, and furnishings or equipment which have been bolted,
welded, nailed, screwed, glued or otherwise attached to any wall, floor or
ceiling, or which have been directly wired to any portion of the electrical
system or which have been plumbed to the water supply, drainage or venting
systems serving the leased premises. LESSEE shall deliver the leased premises
sanitized from any chemicals or other contaminants, and broom clean and in the
same condition as they were at the commencement of this lease or any prior lease
between the parties for the leased premises, or as they were modified during
said term with LESSOR's written consent, reasonable wear and tear and damage by
fire or other casualty only excepted. In the event of LESSEE's failure to remove
any of LESSEE's property from the leased premises upon termination of the lease,
LESSOR is hereby authorized, without liability to LESSEE for loss or damage
thereto, and at the sole risk of LESSEE, to remove and store any such property
at LESSEE's expense, or to retain same under LESSOR's control, or to sell at
public or private sale (without notice), any or all of the property not so
removed and to apply the net proceeds of such sale to the payment of any sum due
hereunder, or to destroy such abandoned property. In no case shall the leased
premises be deemed surrendered to LESSOR until the termination date provided
herein or such other date as may be specified in a written agreement between the
parties, notwithstanding the delivery of any keys to LESSOR.

28.  GENERAL (a) The invalidity or unenforceability of any provision of this
lease shall not affect or render invalid or unenforceable any other provision
hereof. (b) The obligations of this lease shall run with the land, and this
lease shall be binding upon and inure to the benefit of the parties hereto and
their respective successors and assigns, except that LESSOR and OWNER shall be
liable only for obligations occurring while lessor, owner, or master lessee of
the premises. (c) Any action or proceeding arising out of the subject matter of
this lease shall be brought by LESSEE within one year after the cause of action
has occurred and only in a court of the Commonwealth of Massachusetts. (d) If
LESSOR is acting under or as agent for any trust or corporation, the obligations
of LESSOR shall be binding upon the trust or corporation, but not upon any
trustee, officer, director, shareholder, or beneficiary of the trust or
corporation individually. (e) If LESSOR is not the owner (OWNER) of the leased
premises, LESSOR represents that said OWNER has agreed to be bound by the terms
of this lease unless LESSEE is in default hereto. (f) This lease is made and
delivered in the Commonwealth of Massachusetts, and shall be interpreted,
construed, and enforced in accordance with the laws thereof. (g) This lease was
the result of negotiations between parties of equal bargaining strength, and
when executed by both parties shall constitute the entire agreement between sold
parties. No other oral or written representation shall have any effect hereon,
and this agreement may not be altered, extended or amended except by written
agreement attached hereto or as otherwise provided herein. (h) Notwithstanding
any other statements herein, LESSOR makes no warranty, express or implied,
concerning the suitability of the leased premises for LESSEE's intended use. (i)
LESSEE agrees that if LESSOR does not deliver possession of the leased premises
as herein provided for any reason, LESSOR shall not be liable for any damages to
LESSEE for such failure, but LESSOR agrees to use reasonable efforts to deliver
possession to LESSEE at the earliest possible date, and a proportionate
abatement of rent for such time as LESSEE may be deprived of possession said
leased premises shall be LESSEE's sole remedy. (j) Neither the submission of
this lease form, nor the prospective acceptance of the security deposit and/or
rent shall constitute a reservation of or option for the leased premises, or any
offer to lease, it being expressly understood and agreed that this lease shall
not bind either party in any manner whatsoever until it has been executed by
both parties. (k) LESSEE shall not be entitled to exercise any option contained

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herein if LESSEE is in default of any forms or conditions hereof. (l) Except as
otherwise provided herein, LESSOR, OWNER and LESSEE shall not be liable for any
special, incidental or consequential damages, including but not limited to lost
profits or loss of business, arising out of or in any way connected with
performance or nonperformance under this lease, even if any party has knowledge
of the possibility of such damages. (m) The headings in this lease are for
convenience only and shall not be considered part of the terms hereof. (m) No
endorsement by LESSEE on any check shall bind LESSOR in any way. (n) No
endorsement by LESSEE on any check shall bind LESSOR in any way. (o) LESSOR and
LESSEE hereby waive any and all rights to a jury trial in any proceeding in any
way arising out of this lease.

29.  SECURITY AGREEMENT. LESSEE hereby grants LESSOR a continuing security
interest in all existing or hereafter acquired property of LESSEE which is in
the leased premises to secure the payment of rent, the cost of leasehold
improvements, and the performance of any other obligations of LESSEE under this
lease. Default in the payment or performance of any of LESSEE's obligations
hereunder is a default under this Security Agreement, and shall entitle LESSOR
to immediately exercise all of the rights and remedies of a Secured Party under
the Uniform Commerical Code. LESSEE also agrees to execute a UCC-1 Financing
Statement and any other financing agreement required by LESSOR in connection
with this security interest.

30.  WAIVERS, ETC. No consent or waiver, express or implied, by LESSOR, to or
of any breach of any covenant, condition or duty of LESSEE shall be construed as
a consent or waiver to or of any other breach of the same or any other covenant,
condition or duty. If LESSEE is several persons, several corporations or a
partnership, LESSEE's obligations are joint or partnership and also several.
Unless repugnant to the context, "LESSOR" and "LESSEE" mean the person or
persons, natural or corporate, named above as LESSOR and as LESSEE respectively,
and their respective heirs, executors, administrators, successors and assigns.

31.  AUTOMATIC FIVE-YEAR EXTENSIONS.  This lease, including all terms,
conditions, escalations, etc. shall be automatically extended for additional
successive periods of five (5) years each unless LESSOR or LESSEE shall serve
written notice, either party to the other, of either party's desire not to so
extend the lease. The time for serving such written notice shall be not more
than twelve (12) months or less than six (6) months prior to the expiration of
the then current lease period. Time is of the essence.

32. ADDITIONAL PROVISIONS. (Continued on attached rider(s) if necessary.


                             - See Attached Rider-



IN WITNESS WHEREOF, LESSOR AND LESSEE have hereunto set their hands and common
seals and intend to be legally bound hereby this 1st day of September 1998.

LESSOR: CUMMINGS PROPERTIES                 LESSEE: BOSTON COMMUNICATIONS GROUP,
        MANAGEMENT, INC.                            INC.

  By: /s/ Douglas Stephens                 By: /s/ Fritz von Mering
      --------------------------------         ------------------------------
      Executive Vice President                 Treasurer

                                       8
<PAGE>
 
                                 STANDARD FORM
                                RIDER TO LEASE


The following additional provisions are incorporated into and made a part of the
attached lease.

A.   * LESSEE shall have the right to assign this lease or sublet the leased
     premises to an affiliated corporation, namely a corporation in which LESSEE
     owns at least a 50 percent interest, a corporation which owns at least a 50
     percent interest in LESSEE, a corporation with which LESSEE merges, or a
     corporation which is formed as a result of a merger or consolidation
     involving LESSEE, without further consent from LESSOR, provided LESSEE
     serves LESSOR with prior written notice to that effect. The provisions of
     Section 11 shall govern said assignment in all other respects.

B.   * LESSEE shall have access to the leased premises seven (7) days per week,
     Twenty-four (24) hours per day. LESSEE acknowledges and agrees that LESSOR
     has no responsibility for providing any security services for the leased
     premises, and LESSEE assumes any and all risks in that regard.

C.  * LESSEE's use of common area parking spaces for its employees and business
     invitees in the leased premises shall not at any time exceed LESSEE's
     proportionate share of the total number of spaces provided for the building
     under applicable municipal zoning regulations.

D.  * LESSOR, at LESSOR's cost, shall repair and repaint all drywall partitions,
     replace glass and light bulbs as needed, change all lock cylinders and
     clean all carpet before or about the time LESSEE takes possession of the
     leased premises.


LESSOR: CUMMINGS PROPERTIES                 LESSEE: BOSTON COMMUNICATIONS GROUP,
        MANAGEMENT, INC.                            INC.

  By: /s/ Douglas Stephens                 By: /s/ Fritz von Mering
      --------------------------------         ------------------------------
      Executive Vice President                 Treasurer

                                       9
<PAGE>
 
                             AMENDMENT TO LEASE #1
                             ---------------------

In connection with a lease currently in effect between the parties at 100
Sylvan Road, Suite 650 Woburn, Massachusetts, executed on September 3, 1998 and
terminating October 14, 2003 and in consideration of the mutual benefits to
be derived herefrom, Cummings Properties Management, Inc., LESSOR, and Boston
Communications Group, Inc., LESSEE, hereby agree to amend said lease as follows:

1.  The commencement of the lease is hereby changed to noon on March 1, 1999.
    The termination shall remain noon on October 14, 2003, and so the initial
    term of the lease shall be shortened from five years to four years and seven
    and one-half months.

2.  If LESSOR obtains possession of the leased premises from the current
    occupant prior to March 1, 1999, LESSEE shall accept possession of the
    leased premises and begin payment of monthly rent under this lease upon
    notice of such availability from LESSOR. Time is of the essence.

3.  If LESSOR does not deliver possession of the leased premises to LESSEE on or
    before March 15, 1999, LESSEE may elect to cancel the lease by serving
    LESSOR with written notice to that effect on or before March 19, 1999.
    Cancellation of the lease and the proportionate abatement of rent provided
    for in Section 28 of the lease shall be LESSEE's sole remedies for any delay
    or failure by LESSOR in delivering possession of the leased premises. Time
    is of the essence. In the event of cancellation, LESSOR shall return the
    security deposit of $19,000.00 to LESSEE.

4.  LESSEE waives any and all claims it may now have, or may ever in the future
    have, against LESSOR on account of any delay by LESSOR in delivering, or
    failure by LESSOR to deliver, possession of the leased premises to LESSEE.

All other terms, conditions and covenants of the present lease shall continue to
apply.  This amendment shall be effective upon full execution and shall continue
through the balance of the lease and any extensions thereof unless further
modified by written amendments.

In Witness Whereof, LESSOR and LESSEE have hereunto set their hands and common
seals this 4th day of December, 1998.

LESSOR: CUMMINGS PROPERTIES                 LESSEE: BOSTON COMMUNICATIONS GROUP,
        MANAGEMENT, INC.                            INC.

  By: /s/ Douglas Stephens                 By: /s/ Fritz von Mering
      --------------------------------         ------------------------------
      Executive Vice President                 Treasurer

                                       10
<PAGE>
 
                                                                     SCHEDULE II

              BOSTON COMMUNICATIONS GROUP, INC. AND SUBSIDIARIES

                       VALUATION AND QUALIFYING ACCOUNTS

                                 (In thousands)
<TABLE>
<CAPTION>
 
      COL. A                           COL. B                 COL. C            COL. D        COL. E
---------------------------------------------------------------------------------------------------------
                                                            ADDITIONS
                                                      -----------------------
                                                                 CHARGED TO
                                                                 -----------
                                       BALANCE AT    CHARGED TO  OTHER
                                       ----------    ----------  -----------
                                       BEGINNING OF  COSTS AND   ACCOUNTS      DEDUCTIONS    BALANCE AT
                                       ----------    ----------  -----------   -----------   -------------
DESCRIPTION                            PERIOD        EXPENSES    DESCRIBE (1)  DESCRIBE (2)  END OF PERIOD
----------------------------------------------------------------------------------------------------------
<S>                                   <C>           <C>         <C>           <C>           <C>
Year ended December 31, 1998:
Reserves and allowances deducted
from asset accounts:
Allowance for billing adjustments
 and uncollectible accounts           1,304         $ --          $1,557         $1,353      $1,508

Year ended December 31, 1997:
Reserves and allowances deducted
from asset accounts:
Allowance for billing adjustments
 and uncollectible accounts           1,242           --            $636           $574       1,304


Year ended December 31, 1996:
Reserves and allowances deducted
from asset accounts:
Allowance for billing adjustments
 and uncollectible accounts         $   884         $ 30            $896           $564      $1,242
</TABLE> 

(1) Billing adjustments recorded as a reduction of revenue.
(2) Settlement of billing adjustments.

                                       11