Document:

<PAGE>   1
                                                                    EXHIBIT 10.2

                                 AIRCRAFT LEASE

         By this Aircraft Lease TALBOTT AVIATION, INC., a Texas corporation
("Lessor"), whose address is P.O. Drawer 1416, Snyder, Texas 79550, leases to
PATTERSON (GP, LLLC) a Delaware limited liability corporation ("Lessee"), whose
address is P.O. Box 410, Snyder, Texas 79550, the aircraft described below, on
the following terms and conditions:

         1. Description of Aircraft. The property leased under this agreement is
a 1981 Beech King-Air 90 airplane, manufacturer's serial No. LA-121 and
Department of Transportation, Federal Aviation Administration No. N182CA.

         2. Term of Lease. The term of this Lease is for a period of one (1)
year, commencing as of January 1, 2000 and terminating on December 31, 2000.

         3. Rental Payments. Lessee agrees to pay Lessor as rent for the use of
the aircraft a total sum of $9,200.00 per month, payable in advance on the first
day of each month during the term of this Lease, beginning January 1, 2000.

         Rental payments shall be made at Lessor's address as set forth above or
at any other place that may be designated by Lessor or its assignees. Any rental
payment not made by Lessee within ten (10) days of its due date shall by subject
to a late charge of five percent (5%) of the amount not paid when due for each
ten days the amount remains unpaid.

         4. Delivery of Aircraft. Lessor agrees to deliver the aircraft to
Lessee at Scurry County Airport, Snyder, Texas. At delivery to Lessee on January
1, 2000, the aircraft shall be in an airworthy condition and registered in the
name of Lessor with the Secretary of Transportation, pursuant to Section 1401,
Title 49 of the United States Code, and shall be covered by a Certificate of
Airworthiness issued by the Federal Aviation Administration.

         5. Maintenance. During the term of the Lease, Lessee shall at its own
expense maintain the aircraft, including the airframe, engines, propellers,
instruments, equipment, appliances, and accessories in fully operable condition,
and in compliance with all applicable maintenance and safety requirements of the
Federal Aviation Administration and the Federal Aviation Administration approved
1981 Beech King-Air airplane maintenance manual (the "Maintenance Manual"). All
maintenance and repair work shall be performed by personnel duly certified to
perform such work by the Federal Aviation Administration. Work shall be in
accordance with minimum standards of the Federal Aviation Administration and in
accordance with standards set forth in the Maintenance Manual.

Dated this 20th day of December, 1999.

<TABLE>
<S>                                         <C>
LESSOR:                                     LESSEE:

TALBOTT AVIATION, INC.                      PATTERSON (GP) LLC

/s/ CLOYCE A. TALBOTT                       /s/ GLENN PATTERSON
----------------------------                ----------------------------
CLOYCE A. TALBOTT, PRESIDENT                GLENN PATTERSON, PRESIDENT
</TABLE><PAGE>   1
                                                                   EXHIBIT 10.51

January 31, 2000

Mr. Ronnie W. Pitcock, Sr.
38 Lark Bunting Lane
Littleton, CO  80127

Dear Ron:

         The purpose of this letter is to memorialize our agreement concerning
your duties and compensation as Vice-Chairman of High Speed Access Corp.

         To recap, you resigned as President of HSA effective December 31, 1999.
Effective January 1, 2000, you became Vice Chairman of the company. This is a
non-executive, non-director, consultant role that will continue, unless extended
by mutual agreement, for one year. Your duties include advising and supporting
HSA's board and officers, as they may reasonably request from time to time.

         The company will compensate you at an annual rate of pay of $200,000,
which will be paid to you in substantially equal installments throughout the
year. You will not be eligible for company benefits, but we will pay for
continued health and dental benefits for you and Patti under COBRA. You will
also be eligible on December 31, 2000, for a bonus of up to $100,000. This bonus
is dependent upon HSA's financial and operating performance in 2000 in relation
to its goals and objectives as determined by the Board. We will also accelerate
the vesting schedule of the non-qualified options to purchase 125,000 shares of
HSA common stock under our 1999 Stock Option Plan that were granted to you on
June 3, 1999 (100,000 shares) and August 3, 1999 (25,000 shares), such that the
options will become fully vested on January 1, 2001.

         You will not, in any calendar quarter of the year 2000, sell or dispose
of more than 25% of the 1,519,000 HSA shares that you own directly or
beneficially through the Pitcock Family Limited Partnership ("PFLP"). You may
collar your or the PFLP's position, provided the put/call positions are closed
with cash or do not otherwise result in sales or other dispositions exceeding
the volume limitations stated above. You may also pledge the shares, but any
sale forced by margin call or other transfer in lieu of foreclosure must comply
with the timing and volume limitations stated above. Of course, you and PFLP
remain subject to SEC Rule 144, and may not trade in HSA shares while in the
possession of any material, non-public information.

         You, for yourself and your heirs and assigns, release the company and
its officers, directors and other representatives (collectively its
"constituents") from any and all claims relating to your

<PAGE>   2
Mr. Ronnie W. Pitcock, Sr.
03/27/00
Page 2

employment with the Company and termination therefrom. We both agree not to make
any disparaging statements about one another. Unless disclosure is required by
law, we both agree to keep the terms of this agreement strictly confidential.

         You can terminate this agreement "for cause" if the company violates
any of its promises set forth above. The company can terminate the relationship
"for cause" (a) if you compete with the company, or solicit its employees, in a
manner that would violate the provisions of your original Employment,
Non-Competition and Non-Disclosure Agreement with High Speed Access Network,
Inc., (b) if you disparage the company, or (c) if you willfully engage in any
dishonest or fraudulent conduct that in the company's judgment constitutes a
crime or breach of fiduciary duty or materially and adversely affects the
company's operations or reputation. Should either party terminate the agreement
"for cause," the obligations of the other party will continue through December
31, 2000.

         This letter sets forth the entire agreement between us, and binds and
benefits both of us and our respective representatives, successor and assigns.

         Finally, please find enclosed your bonus check for 1999 in the amount
of $100,000. We thank you for not depositing it until you have returned a
countersigned copy of this letter to me. We also thank you again for your past
and future services to the company.

                                 HIGH SPEED ACCESS CORP.

                                 By:      /s/ David A. Jones, Jr.
                                    -----------------------------
                                          David A. Jones, Jr.
                                          Chairman of the Board of Directors

                                 Agreed as stated above:

                                     /s/  Ronnie W. Pitcock, Sr.
                                  ------------------------------
                                 Ronnie W. Pitcock, Sr.

                                       2<PAGE>   1
                                                                   EXHIBIT 10.52

                              EMPLOYMENT AGREEMENT

         THIS EMPLOYMENT AGREEMENT ("Agreement") is made and entered into
effective as of the 1st day of October, 1999, by and between HIGH SPEED ACCESS
CORP., a Delaware corporation (the "Company"), and DANIEL J. O'BRIEN, an
individual ("Executive").

         RECITAL:

         Executive desires to be employed by the Company and the Company desires
to employ Executive on the terms and conditions hereinafter provided.

         NOW, THEREFORE, in consideration of the mutual promises and covenants
contained herein, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, it is agreed by and between the
parties hereto as follows:

         1. EMPLOYMENT. The Company hereby employs Executive and Executive
accepts employment by the Company and agrees to serve the Company, upon the
terms and conditions hereinafter set forth. Executive's employment shall
commence on October 1, 1999.

         2. DUTIES. Executive shall be employed by the Company as Chief
Operating Officer. As Chief Operating Officer, Executive's duties will be
commensurate with those customarily performed by one with such title and
position at a company similarly situated to the Company. So long as he is
employed hereunder, Executive agrees to devote his full business time and energy
to the business and affairs of the Company, to perform his duties hereunder to
the best of his ability and at a level of competency consistent with the
position occupied, to act on all matters in a manner he reasonably believes to
be in and not opposed to the best interests of the Company, to use his best
efforts, skill and ability to promote the profitable growth of the Company, and
to perform such other duties, consistent with duties customarily performed by
one with such title and position at a company similarly situated to the Company,
as may be assigned to him by the Company's Chief Executive Officer, Chairman or
by the Company's Board of Directors ("Board") from time to time.

         3. COMPENSATION AND BENEFITS. For all services rendered by Executive,
the Company shall pay compensation and provide benefits to Executive as follows:

                  A. SALARY. The Company shall pay Executive an initial salary
("Salary") of $25,000 per month. Commencing on October 1, 2000, Executive's
Salary shall be increased to $29,167 per month. Commencing on October 1, 2001,
Executive's Salary shall be increased to $33,333 per month.

                  B. BUSINESS EXPENSES. The Company shall reimburse Executive
for his reasonable direct out-of-pocket ordinary and necessary expenses, if any,
incurred by Executive in

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the performance of his services hereunder and for which Executive properly
accounts in accordance with the Company's regulations and procedures in effect
from time to time.

                  C. VACATION. Executive shall be entitled to four (4) weeks
paid vacation during each 12 month period of Executive's employment with the
Company. Executive shall not be entitled to carry over any unused vacation.

                  D. LIFE INSURANCE. The Company shall purchase and maintain, so
long as Executive is employed with the Company, a term life insurance policy on
the life of Executive in the amount of Two Million Dollars ($2,000,000), which
policy shall name Executive's spouse or estate, as beneficiary. At the
termination of Executive's employment, Executive shall have the right to elect
to have the Company assign the term life insurance policy to Executive. Should
the Executive exercise the right to assign, Executive shall thereafter be
responsible for all premium payments under the policy.

                  E. REIMBURSEMENT OF CERTAIN EXPENSES. The Company shall
reimburse Executive up to Five Thousand Dollars ($5,000) per annum for financial
and tax planning expenses incurred by Executive for which Executive properly
accounts in accordance with the Company's regulations and procedures in effect
from time to time.

                  F. ADDITIONAL BENEFITS. Executive shall be entitled to
participate (on the same terms and conditions as other executive officers of the
Company generally) in any and all employee vacation, retirement, medical, life
and disability insurance, and other benefits plans and perquisites as may be
established and in effect from time to time and made available to employees of
the Company.

         4. STOCK OPTIONS.

                  A. INITIAL OPTION GRANT. Executive will receive an initial
grant of options ("Initial Option Grant") under Company's stock option plan
("Plan") to purchase 750,000 shares of Company common stock pursuant to a Stock
Option Agreement to be executed by Company and Executive in the form attached
hereto as Exhibit A and incorporated by reference herein.

                  B. SUBSEQUENT OPTION GRANTS. Subject to Executive's continued
employment with Company, (i) Executive will receive options to purchase 100,000
shares of Company's common stock on October 1, 2000, and (ii) Executive will
have the opportunity to receive options to purchase an additional 100,000 shares
of Company's common stock on each of October 1, 2000, October 1,2001 and October
1, 2002, based upon Executive's achievement of specific goals concerning the
performance of Executive and the Company for the preceding twelve (12) month
period, previously established by the Board (or the Compensation Committee
thereof) and Executive. Company and Executive shall establish such specific
goals for the twelve (12) months ended September 30, 2000 within thirty (30)
days from the date hereof and shall establish such specific goals for the twelve
(12) months ended September 30, 2001 and September 30, 2002, respectively, on or
before the preceding

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October 31. Each option granted to Executive under this Section 4.B shall have
an exercise price equal to the fair market value per share of Common Stock on
the date of grant as determined under the Plan. The option grants made to
Executive pursuant to this Section 4.B shall be evidenced by a stock option
agreement to be executed by Company and Executive substantially in the form
attached hereto as Exhibit B.

                  C. TERMS OF OPTIONS. Subject to the provisions of this Section
4, the option grants made to Executive under Sections 4.A and B will be made
under and subject to the terms of the Plan and will vest in five equal annual
installments commencing on the first anniversary of the date of grant. Without
any representation or warranty by or on the part of Company, to the extent any
of the options granted to Executive hereby can, by the terms set forth herein
and in the Plan, qualify as incentive stock options under the provisions of the
Internal Revenue Code of 1986, as amended, the parties hereto intend that the
same shall be treated as incentive stock options, and to the extent any or all
of the options cannot qualify as incentive stock options under the Code, the
parties hereto intend that the same shall be treated as nonstatutory options.

         5. SUPPLEMENTAL AGREEMENT. The Company and Executive shall enter into a
supplemental executive compensation agreement substantially in the form attached
hereto as Exhibit C and incorporated by reference herein ("Supplemental
Agreement").

         6. WITHHOLDING. The Company shall be authorized to deduct and withhold
from Executive's compensation such sums as are required by law to be deducted
and withheld.

         7. AT WILL EMPLOYMENT. Subject to the provisions of the Supplemental
Agreement, Executive's employment with the Company will be terminable at will.
The employment at will relationship to exist between the Company and Executive
allows either the Company or the Executive to end the employment relationship at
any time, with or without cause.

         8. COVENANTS NOT TO SOLICIT OR COMPETE

                  A. NON-COMPETITION. Executive agrees that, during the
Noncompete Period (as defined in Section 8.D of this Agreement), he shall not in
any manner, directly or indirectly or by assisting others, as a supervisor,
administrator, executive, senior or management level employee, owner,
proprietor, shareholder, consultant or otherwise, engage in any business which
provides high speed internet access, IP telephony or similar services which are
the same or essentially the same as the business of the Company (including, by
way of example @Home, ISP Channel and RoadRunner); provided that Executive shall
not be restricted from owning less than 5% of the outstanding shares of a
company whose shares are publicly traded.

                  B. NON-SOLICITATION. Executive agrees that, during the
Noncompete Period, he shall not (other than in the regular course of the
Company's business), solicit, directly or indirectly, business of the type then
being performed by the Company from any person, partnership, corporation or
other entity which [a] is a customer of the Company at the time Executive's
employment with the

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Company terminates, or [b] was such a customer within the two-year period
immediately prior thereto, for the purposes of providing products or services
that are competitive with those provided by the Company.

                  C. NON-INDUCEMENT. Executive agrees that for the period he is
employed by the Company and for a one-year period immediately following the
termination of his employment with the Company for any reason whatsoever, he
shall not directly or indirectly, individually or on behalf of persons not
parties to this Agreement, aid or endeavor to solicit or induce any of the
Company's employees to leave their employment with the Company in order to
accept employment with Executive or another person, partnership, corporation or
other entity.

                  D. NONCOMPETE PERIOD. For purposes of this Section 8, (i) if
Executive's employment with the Company shall be terminated without Cause (as
defined herein), the Noncompete Period shall mean the period commencing on the
date hereof and continuing for a six (6) month period immediately following his
termination of employment, and (ii) if Executive shall voluntarily terminate his
employment with the Company or Executive is terminated with Cause, the
Noncompete Period shall mean the period commencing on the date hereof and
continuing for a twelve (12) month period immediately following his termination
of employment. "Cause" shall mean that Executive's employment with the Company
shall have terminated upon the occurrence of any of the following events:

                           (a) The discharge of Executive for willful
         misconduct, dishonesty or fraud on Executive's part in connection with
         the performance of any of his duties under the Employment Agreement; or

                           (b) The discharge of Executive for a material breach
         by Executive of any of the terms of Sections 8 or 10 of this Agreement;
         or

                           (c) The discharge of Executive upon a determination
         by the Board, acting in good faith and with reasonable justification,
         that Executive's performance in his position as Chief Operating Officer
         of the Company has been unsatisfactory, after first having given
         written notice to Executive that his performance has been
         unsatisfactory (which notice shall set forth in reasonable detail the
         nature of the unsatisfactory performance), and Executive having failed
         to cure such unsatisfactory performance within thirty (30) days
         thereafter to the reasonable satisfaction of the Board; or

                           (d) The discharge of Executive for conviction of a
         felony or a crime involving moral turpitude.

         9. INJUNCTIVE RELIEF FOR BREACH: ENFORCEABILITY. Executive agrees that
Company may not be adequately compensated by damages for a breach by Executive
of any of the covenants contained in Section 8, and that, in addition to all
other remedies, the Company shall be entitled to injunctive relief and specific
performance. In such event, the periods of time referred to in Section

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8 shall be deemed extended for a period equal to the respective period during
which Executive is in breach thereof, in order to provide for injunctive relief
and specific performance for a period equal to the full term thereof. The
covenants contained in Section 8 shall be construed as separate covenants, and
if any court shall finally determine that the restraints provided for in any
such covenants are too broad as to the geographic area, activity or time
covered, said area, activity or time covered may be reduced to whatever extent
the court deems reasonable and such covenants shall be enforced as to such
reduced area, activity or time and Executive expressly agrees that this
Agreement, as so amended, shall be valid and binding.

         10. PROPRIETARY RIGHTS.

                  A. RECOGNITION OF COMPANY'S RIGHTS; NONDISCLOSURE. At all
times during the term of his employment and thereafter, Executive will hold in
strictest confidence and will not disclose, use, lecture upon or publish any of
the Company's Proprietary Information (defined below), except as such
disclosure, use or publication may be required in connection with his work for
the Company, or unless the Chief Executive Officer or the Board of Directors of
the Company expressly authorizes such in writing. Executive shall and hereby
does assign to the Company any rights he may have or acquire in such Proprietary
Information and recognizes that all Proprietary Information shall be the sole
property of the Company and its assigns and that the Company and its assigns
shall be the sole owner of all patent rights, copyrights, trade secret rights
and all other rights throughout the world (collectively, "Proprietary Rights")
in connection therewith. The term "Proprietary Information" shall mean trade
secrets, confidential knowledge, data or any other proprietary information of
the Company which the Company treats as confidential with respect to the general
public. By way of illustration but not limitation, "Proprietary Information"
includes (a) inventions, trade secrets, ideas, processes, formulas, data,
programs, other words of authorship, know-how, improvements, discoveries,
developments, designs and techniques relating to the business or proposed
products of the Company and which were learned or discovered by Executive during
the term of his employment with the Company (hereinafter collectively referred
to as "Inventions"); and (b) information regarding plans for research,
development, new products and services, marketing and selling, business plans,
budgets and unpublished financial statements, licenses, prices and costs,
suppliers and customers which were learned or discovered by him during the term
of his employment with the Company, and information regarding the compensation
of other employees of the Company. For purposes of this Agreement, the term
"Proprietary Information" shall not include information that Executive can show
by competent proof (i) was known to Executive prior to disclosure by the
Company; (ii) was generally known to the public at the time the Company
disclosed the information to Executive; (iii) became generally known to the
public after disclosure by the Company through no act or omission of Executive;
or (iv) was disclosed to Executive by a third party having a bona fide right
both to possess the information and to disclose it to Executive.

                  B. THIRD PARTY INFORMATION. Executive understands, in
addition, that the Company may from time to time receive from third parties
confidential or proprietary information ("Third Party Information") subject to a
duty on the Company's part to maintain the confidentiality of such information
and to use it only for certain limited purposes. During the term of his

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employment and thereafter, Executive will hold Third Party Information in the
strictest confidence and will not disclose (to anyone other than Company
personnel who need to know such information in connection with their work for
the Company) or use, except in connection with his work for the Company, Third
Party Information unless expressly authorized by the Chairman or Chief Executive
Officer of the Company in writing.

                  C. RETURN OF COMPANY DOCUMENTS. When Executive leaves the
employ of the Company, he will deliver to the Company all drawings, notes,
memoranda, specifications, devices, formulas, and documents, together with all
copies thereof, and any other material containing or disclosing any Third Party
Information or Proprietary Information of the Company.

                  D. LEGAL AND EQUITABLE REMEDIES. Because Executive's services
are personal and unique and because Executive may have access to and become
acquainted with the Proprietary Information of the Company, the Company shall
have the right to enforce this Section 10 of the Agreement and any of its
provisions by injunctions, specific performance or other equitable relief,
without bond, without prejudice to any other rights and remedies that the
Company may have for a breach of this Agreement.

         11. NOTICES. All notices and other communications hereunder shall be in
writing and shall be given or made by hand delivery, or by certified or
registered mail, return receipt requested, postage prepaid, or by telegram, as
follows, or to such other person or address as shall be hereafter designated by
notice given in accordance with this Section:

                  A.       If to the Company:    High Speed Access Corp.
                                                 Attn:  President
                                                 Suite 1150
                                                 4100 East Mississippi Avenue
                                                 Denver, Colorado  80246

                  B.       If to Executive:      Daniel J. O'Brien
                                                 31 Golden Eagle Lane
                                                 Littleton, Colorado  80127

Any notice or other communication hereunder shall be deemed to have been duly
given or made if made by hand, when delivered against receipt therefor or when
attempted delivery shall be rejected, as the case may be, if made by letter,
upon deposit thereof in the mail, postage prepaid, registered or certified, with
return receipt requested, and if made by telegram, facsimile or reputable
overnight courier when sent. Notwithstanding the foregoing, any notice or other
communication hereunder which is actually received by a party hereto shall be
deemed to have been duly given or made to such party.

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         12. MISCELLANEOUS.

                  A. ASSIGNMENT. This is a contract for personal services by
Executive and may not be assigned by Executive. This Agreement shall inure to
the benefit of and be binding upon the Company and its successors and assigns.

                  B. WAIVER OF BREACH. Failure or delay by either party to
insist upon compliance with any provision hereof shall not operate as, and is
not to be construed as, a waiver or amendment of such provision. The waiver by
either party of a breach of any provision of this Agreement by the other shall
not operate or be construed as a waiver of any subsequent breach, whether
occurring under similar or dissimilar circumstances.

                  C. ENTIRE AGREEMENT: CANCELLATION OF PRIOR AGREEMENTS. This
Agreement, the Stock Option Agreement and the Supplemental Agreement contain the
entire agreement of the parties with respect to the subject matter hereof. This
Agreement may not be changed orally, but only by an amendment in writing signed
by the parties hereto. All prior agreements or understandings concerning
Executive's employment by the Company are hereby canceled and superseded by this
Agreement.

                  D. SEVERABILITY. The invalidity or unenforceability of any
provision of this Agreement shall not affect the validity or enforceability of
the remainder of this Agreement.

                  E. HEADINGS. The headings contained in this Agreement are for
convenience only and shall not be deemed a part of this Agreement in construing
or interpreting the provisions hereof.

                  F. GOVERNING LAW. This Agreement shall be governed by and
construed in accordance with the laws of the State of Colorado.

                  G. COUNTERPARTS. This Agreement may be executed in
counterparts, each of which shall be deemed an original, but all of which when
taken together shall constitute one and the same instrument.

                  H. ARBITRATION. Any controversy arising out of, or relating
to, this Agreement or any modification or extension of this Agreement, including
any claim for damages, recission, specific performance or other legal or
equitable relief, shall be settled by arbitration in the City of Denver, State
of Colorado, in accordance with the rules then obtaining of the American
Arbitration Association. The determination of the arbitrator when made shall be
binding upon all parties bound by the terms of this Agreement. Judgment upon the
award rendered by the arbitrator may be entered in any court of competent
jurisdiction. The foregoing notwithstanding, the Company shall have the right to
seek injunctive or other equitable relief from any court of competent
jurisdiction in the event of any breach or threatened breach of Sections 8 or 10
of this Agreement.

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<PAGE>   8

                  IN WITNESS WHEREOF, the parties have executed this Agreement
as of the day, month and year first above written.

                                       HIGH SPEED ACCESS CORP.

                                       By: /s/ David A. Jones, Jr.
                                          -----------------------------

                                       Title: Chairman
                                             --------------------------

                                                      ("Company")

                                           /s/ Daniel J.  O'Brien
                                       -----------------------------
                                       DANIEL J. O'BRIEN

                                                      ("Executive")

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                                    EXHIBIT A
                             STOCK OPTION AGREEMENT

                      [see Exhibit 10.54 to this Form 10-K]

                                       9
<PAGE>   10

                                    EXHIBIT B

                             HIGH SPEED ACCESS CORP.
                             STOCK OPTION AGREEMENT

                  THIS STOCK OPTION AGREEMENT ("Agreement") is made and entered
into effective as of the _____ day of _______, _____, by and between HIGH SPEED
ACCESS CORP, a Delaware corporation (the "Corporation"), and DANIEL J. O'BRIEN
("Optionee").

         RECITALS:

         A. The Corporation has adopted the High Speed Access Corp. 1999 Stock
Option Plan ("Plan") to promote the interests of the Corporation and its
shareholders by providing selected key employees of the Corporation with
additional incentive to invest in shares of the Corporation's common stock, $.01
par value per share ("Shares").

         B. The Corporation believes that such investment should increase the
personal interest and special effort of the key employees in providing for the
continued success and progress of the business of the Corporation and should
enhance the Corporation's efforts to attract and retain competent key employees.

         C. Optionee is one of the key employees for whom the Plan was adopted
and the Corporation desires to grant Optionee an option to acquire Shares
pursuant to the terms and conditions of the Plan and this Agreement.

         D. Concurrently with the execution hereof, the Corporation and Optionee
have entered into an Employment Agreement (the "Employment Agreement") and a
Supplemental Executive Compensation Agreement (the "Supplemental Agreement").

         AGREEMENT:

         NOW, THEREFORE, the parties hereby agree as follows:

         1. GRANT OF OPTION; OPTION PRICE. The Corporation hereby grants to
Optionee the right and option to purchase ("Option") all or any part of an
aggregate of __________ Shares (the "Option Shares") on the terms and conditions
set forth herein, at a purchase price of $____ per Option Share ("Option
Price"). ______ of the Option Shares shall be considered incentive stock options
within the meaning of Section 422 of the Internal Revenue Code of 1986, as
amended, and _______ of the Option Shares shall be considered nonstatutory stock
options. The Corporation and Optionee consider the Option Price to be not less
than 100% of the value of the Shares on the date hereof, which is the date on
which the Option was granted to Optionee (the "Date of Grant").

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<PAGE>   11

         2. TERM OF OPTION AND VESTING. The Option shall continue for a term
commencing on the date hereof and ending at 5:00 p.m. Eastern Time on
________________ ("Termination Date"), unless sooner terminated as provided in
Section 5. Subject to the other terms and conditions set forth in this
Agreement, including without limitation Sections 6 and 7 hereof, the Option
shall vest and Optionee shall have the right to exercise the Option as follows:

                  2.1 FIRST YEAR. Up to twenty percent (20%) of the total Option
Shares may be exercised at any time after ____________.

                  2.2 SECOND YEAR. Up to an additional twenty percent (20%) of
the total Option Shares may be exercised at any time after two (2) years
following _____________.

                  2.3 THIRD YEAR. Up to an additional twenty percent (20%) of
the total Option Shares may be exercised at any time after three (3) years
following _____________.

                  2.4 FOURTH YEAR. Up to an additional twenty percent (20%) of
the total Option Shares may be exercised at any time after four (4) years
following ______________.

                  2.5 FIFTH YEAR. Up to an additional twenty percent (20%) of
the total Option Shares may be exercised at any time after five (5) years
following _______________.

         If an installment covers a fractional share, such installment shall be
rounded off to the next highest share, except for the final installment, which
will be for the balance of the total Option Shares.

         3. CONDITIONS TO EXERCISE OF OPTIONS.

                  3.1 EXERCISE OF OPTION. Optionee may exercise the Option by
delivering to the Corporation: [i] seven (7) days' prior written notice
("Exercise Notice") specifying the number of Shares as to which the Option is
being exercised and, if determined by counsel for the Corporation to be
necessary, representing that such Shares are being acquired for investment
purposes only and not for purpose of resale or distribution; and [ii] payment by
the Optionee, or a broker-dealer (as provided in Section 3.2 hereof), of the
Option Price for the number of Shares with respect to which the Option is being
exercised, in the manner provided in Section 3.2.

                  3.2 PAYMENT OF OPTION PRICE. The Corporation shall accept as
payment for the Option Price cash, a certified or cashiers check, whole shares
of Common Stock owned by the Optionee evidenced by negotiable certificates, such
other consideration as shall constitute lawful consideration for the issuance of
Common Stock and be approved by the Compensation Committee of the Corporation's
Board of Directors (the "Committee") established to administer the Plan
(including without limitation, assurance satisfactory to the Committee from a
broker registered under the Securities Exchange Act of 1934 of the delivery of
the proceeds of an imminent sale of Common Stock to be issued pursuant to the
exercise of such Option, such sale to be made at the direction of

                                       11
<PAGE>   12

the Optionee), or a combination of such methods of payment, which payment must
be delivered to the Corporation with the Exercise Notice.

                  3.3 DELIVERY OF STOCK ON EXERCISE. On or before the expiration
of the seven (7) day Exercise Notice period, and provided that all conditions
precedent contained in this Agreement are satisfied, the Corporation shall,
without transfer or issuance tax or other incidental expenses to Optionee,
deliver to Optionee, at the offices of the Corporation, or at such other place
as may be mutually acceptable, or, at the election of the Corporation, by
certified mail addressed to Optionee at Optionee's address as shown in the
records of the Corporation, a certificate or certificates for the number of
Shares set forth in the Exercise Notice and for which the Corporation has
received payment in the manner prescribed herein. The Corporation may postpone
such delivery until it receives satisfactory proof that the issuance or transfer
of such Shares will not violate any of the provisions of the Securities Act of
1933, as amended, or the Securities Exchange Act of 1934, as amended, or any
rules or regulations of the Securities and Exchange Commission promulgated
thereunder, or the requirements of applicable state law relating to
authorization, issuance or sale of securities, or until there has been
compliance with the provisions of such acts or rules or the requirements of the
regulations. Options are exercisable only in whole Shares. If Optionee fails to
accept delivery of all or any part of the number of Shares specified in the
Exercise Notice upon tender of delivery thereof, Optionee's right to exercise
this Option with respect to such undelivered shares may be terminated by the
Corporation.

                  3.4 OPTION NOT TRANSFERABLE EXCEPT IN EVENT OF DEATH. During
Optionee's lifetime, the Option shall be exercisable only by Optionee, and
neither the Option nor any right hereunder shall be transferable except by will
or by the laws of descent and distribution, provided, however, if permitted
under the terms of the Plan, as in effect from time to time, transfers of the
Option, or portions thereof, shall also be permitted under this Agreement. The
Option may not be subject to execution or other similar process. If Optionee
attempts to alienate, assign, pledge, hypothecate or otherwise dispose of the
Option or any of Optionee's rights hereunder, except as provided herein, or in
the event of any levy, attachment, execution or similar process upon the rights
or interests hereby conferred, the Corporation may, in its sole and absolute
discretion, terminate the Option by notice to Optionee and it shall thereupon
become null and void.

         4. ACCELERATION OF EXERCISE DATES UPON DEATH OR DISABILITY. The Option
granted by this Agreement shall vest and become fully exercisable on or after
the date of termination of Optionee's employment with the Corporation due to
death or Disability.

                                       12
<PAGE>   13

         5. TERMINATION.

                  5.1 TERMINATION OF EMPLOYMENT FOR REASONS OTHER THAN
DISABILITY, DISCHARGE FOR CAUSE, OR DEATH. Upon the termination of Optionee's
employment with the Corporation for a reason other than Optionee's Disability,
discharge for Cause or death, the Option granted hereunder shall be exercisable,
to the extent exercisable at the date of Optionee's termination of employment,
at any time prior to the earlier of [a] three (3) months following receipt by
Optionee or the Corporation of a notice of termination of employment, or [b] the
Termination Date.

                  5.2 TERMINATION OF EMPLOYMENT BECAUSE OF DISABILITY. If
Optionee's employment with the Corporation terminates because of Optionee's
Disability, the Option granted hereunder shall be exercisable at any time within
a period ending on the earlier of [a] one year after Optionee's Disability or
[b] the Termination Date.

                  5.3 TERMINATION OF EMPLOYMENT BECAUSE OF DISCHARGE FOR CAUSE.
This Agreement shall terminate and the Option granted hereunder shall be null
and void immediately upon the termination of Optionee's employment with the
Corporation through discharge for Cause, as defined in the Employment Agreement.

                  5.4 DEATH OF OPTIONEE. If Optionee dies [i] while employed by
the Corporation, or [ii] within three (3) months after ceasing to be an employee
of the Corporation, then the Option granted hereunder shall be exercisable by
Optionee's personal representative or the person or persons to whom Optionee's
rights under the Option shall pass by will or by application of the laws of
descent and distribution, at any time within a period ending on the earlier of
[a] one (1) year after Optionee's date of death or [b] the Termination Date.

         6. ACCELERATION UPON A CHANGE OF CONTROL. Notwithstanding any provision
of this Agreement to the contrary, upon a Corporate Transaction, as defined in
the Plan, the provisions of Section 9 of the Plan shall govern the
exerciseability of the Option granted hereunder.

         7. ADJUSTMENT OF SHARES. In the event of capital adjustment after the
Date of Grant in the Common Stock of the Corporation by reason of any
reorganization, recapitalization, stock split, stock dividend, combination or
exchange of shares, merger or consolidation, or any other change (after the
effective date of the Plan) in the nature or number of shares of Common Stock of
the Corporation, a proportionate adjustment shall be made in the Option Price
and the number and kind of shares of Common Stock covered by outstanding Options
granted pursuant to this Agreement. By virtue of such a capital adjustment, the
price of any share under Option shall be adjusted so that there will be no
change in the aggregate purchase price payable upon exercise of any such Option.
Such determination by the Compensation Committee shall be conclusive.

         8. SECURITIES LAWS. Optionee understands that the shares issuable upon
exercise of the Option have not been registered under the Securities Act of
1933, as amended (the "Act"), or under the laws of any other jurisdiction, and
that the Corporation does not contemplate registering, and is

                                       13
<PAGE>   14

under no obligation to register, such securities. Optionee understands and
agrees that the shares issuable upon exercise of the Option may not be sold,
transferred, pledged or otherwise disposed of unless they are subsequently
registered under the Act and, where required, under the laws of other
jurisdictions or an exemption from registration is available and the Corporation
is in receipt of an opinion of counsel satisfactory to the Corporation to such
effect.

         9. TAX WITHHOLDING. The Corporation shall have the right to require
Optionee to remit to the Corporation an amount sufficient to satisfy all
federal, state and local withholding tax requirements, or, alternatively, the
Corporation shall have the right to withhold from any payment due Optionee or
retain Common Stock otherwise payable to the Optionee pursuant to exercise of an
Option in an amount sufficient to satisfy such withholding requirements, before
the delivery to the Optionee of any certificate(s) for shares of Common Stock.

         10. MISCELLANEOUS PROVISIONS.

                  10.1 OPTION TERMINATES UPON TERMINATION DATE. Notwithstanding
any provision contained herein to the contrary, this Option shall terminate and
become null and void and of no effect after the Termination Date.

                  10.2 NO RIGHTS AS A SHAREHOLDER. Optionee shall not have any
of the rights of a shareholder regarding the Option Shares, except to the extent
that certificate(s) for such Option Shares shall have been issued upon the
exercise of the Option as provided herein.

                  10.3 CAPTIONS. The captions and section headings used herein
are for convenience only, shall not be deemed part of this Agreement and shall
not in any way restrict or modify the context and substance of any section or
paragraph of this Agreement.

                  10.4 GOVERNING LAW. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of Delaware.

                  10.5 ENTIRE AGREEMENT. This Agreement, the Employment
Agreement, the Supplement Agreement and the Plan contain the entire agreement
between the parties regarding its subject matter. It supersedes all prior
written or contemporaneous oral agreements related thereto.

                  10.6 AMENDMENT AND MODIFICATIONS. No amendment or other
modification to this Agreement shall be binding upon any party unless executed
in writing by all of the parties hereto.

                  10.7 WAIVER. No waiver by any party of any of the provisions
of this Agreement will be deemed, or will constitute, a waiver of any other
provision, whether similar, nor will any waiver constitute a continuing waiver.
No waiver will be binding unless executed in writing by the party making the
waiver.

                                       14
<PAGE>   15

                  10.8 CUMULATIVE REMEDIES. No right or remedy conferred upon or
reserved to any of the parties under the terms of this Agreement is intended to
be, nor shall it be deemed, exclusive of any other right or remedy provided
herein or by law or equity, but each shall be cumulative of every other right or
remedy.

                  10.9 CAPITALIZED TERMS. Capitalized terms in this Agreement
shall have the meaning ascribed to such terms in the Plan unless otherwise
defined herein.

                  10.10 OPTIONEE BOUND BY PLAN. Optionee acknowledges receipt of
a copy of, and agrees to be bound by, the terms and provisions of, the Plan,
which is incorporated herein by reference.

         IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first written above.

                                       HIGH SPEED ACCESS CORP.

                                       By:
                                          --------------------------------------

                                       Title:
                                             -----------------------------------

                                            ("Corporation")

                                       -----------------------------------------
                                       DANIEL J. O'BRIEN
                                            ("Optionee")

                                       15
<PAGE>   16

                                   EXHIBIT C

                  SUPPLEMENTAL EXECUTIVE COMPENSATION AGREEMENT

                      [see Exhibit 10.53 to this Form 10-K]

                                       16

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