Document:

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                                                                     Exhibit 4.1

[LOGO]
NUMBER
SHARES
SC-
INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
CUSIP  868587 10 6
SEE REVERSE FOR CERTAIN DEFINITIONS
THIS CERTIFIES THAT
SUPPORT.COM
is the record holder of
FULLY PAID AND NONASSESSABLE  SHARES OF COMMON STOCK, $.0001 PAR VALUE OF
SUPPORT.COM, INC.
transferable on the books of the Corporation by the holder hereof in person or
by duly authorized Attorney upon surrender of this certificate properly
endorsed. This certificate is not valid until countersigned by the Transfer
Agent and Registrar.
WITNESS the facsimile seal of the Corporation and the facsimile signatures of
its duly authorized officers.
Dated:
[Brian Beattie]
CHIEF FINANCIAL OFFICER
[SEAL]
[Radha Basu]
CHIEF EXECUTIVE OFFICER AND PRESIDENT
COUNTERSIGNED AND REGISTERED:
AMERICAN SECURITIES TRANSFER & TRUST, INC.
P.O. BOX 1596
DENVER, CO  80201
TRANSFER AGENT
AND REGISTRAR
BY
AUTHORIZED SIGNATURE
<PAGE>

SUPPORT.COM, INC.
A statement of all of the powers, designations, preferences and relative,
participating, optional, or other special rights of each class of stock or
series thereof and the qualifications, limitations or restrictions of such
preferences and/or rights as established by the Certificate of Incorporation, as
amended, may be obtained by any stockholder upon request and without charge from
the principal office of the Corporation.
The following abbreviations, when used in the inscription on the face of this
certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:
TEN COM- as tenants in common
TEN ENT- as tenants by the entireties
JT TEN- as joint tenants with right
of survivorship and not as
tenants in common
UNIF GIFT MIN ACT- _____ Custodian _____
(Cust)  (Minor)
under Uniform Gifts to Minors
Act _____
(State)
UNIF TRF MIN ACT- _____ Custodian (until age _____ )
(Cust)
_____ under Uniform Transfers
(Minor)
to Minors Act _____
(State)
Additional abbreviations may also be used though not in the above list.
ASSIGNMENT
For Value Received _____ hereby sell(s), assign(s) and transfer(s) unto
PLEASE INSERT SOCIAL SECURITY SECURITY OR OTHER
IDENTIFYING NUMBER OF ASSIGNEE
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE OF ASSIGNEE(S)
of the Shares of capital stock represented by the within Certificate and do(es)
hereby irrevocably constitute and
appoint _____ Attorney
to transfer the said Shares on the books of the within named Corporation with
full power of substitution in the premises.
Dated
NOTE: The signature to this assignment must correspond with
the names as written upon the face of the certificate in every
particular, without alteration or enlargement or any change whatever.
Signature must be guaranteed.
Signature(s) Guaranteed:
By
THE SIGNATURES MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS,
STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN
AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM) PURSUANT TO S.E.C. RULE 17Ad-
15.<PAGE>

                                                                    EXHIBIT 10.5

1779 Woodside Road, Suite 204
Redwood City, CA  94061
Tel:  650-369-5211 Fax:  650-368-5221                  [LETTERHEAD]

Dear Tony Rodoni;

     I am pleased to offer you a position with Replicase, Inc., a Delaware
corporation (the "Company") as Vice President of Marketing, commencing on June
                               ---------------------------                ----
24th, 1998.  You will have an annual salary of $135,000, which will be paid
----------                                     --------
semi-monthly in accordance with the Company's normal payroll procedures.  You
will also receive an annual bonus of $30,000 - with $20,000 based on the Company
achieving $5 million in 1999 revenue (subsequent years to be determined) and
$10,000 based on management based objectives which will be determined soon after
your joining the company and then reset annually.  In 1998, you will receive a
bonus of $15,000 based on Replicase successfully launching five pilot accounts.
You will also receive 425,000 stock options, which will carry vesting and
                      -------
exercise provisions in accordance with the Company's standard policies.  You
will also receive a bonus of 25,000 options based on the Company achieving $5
million in 1999 revenue.  (See Employee agreement amendment A for more details)

     As a Company employee, you will also be eligible to receive all employee
benefits, which will include health insurance.  You should note that the Company
may modify salaries and benefits from time to time as it deems necessary.  You
will also be entitled to certain bonuses based on product releases and sales,
which will be defined at a later date.  (See Employee agreement amendment A for
more details)

     You should be aware that your employment with the Company is for no
specified period and constitutes at will employment.  As a result you are free
to resign at any time, for any reason or for no reason.  Similarly, the Company
is free to conclude its employment relationship with you at any time, with or
without cause, and with or without notice.

     For purposes of federal immigration law, you will be required to provide
to the Company documentary evidence of your identity and eligibility for
employment in the United States.  Such documentation must be provided to us
within three (3) business days of your date of hire, or our employment
relationship with you may be terminated.

     You agree that during the term of your employment with the Company, you
will not actively engage in any other employment occupation, consulting or other
business directly or indirectly related to the business in which the Company is
now involved or becomes involved during the term of your employment nor will you
engage in any other activities that conflict with your obligations to the
Company.  (See Employee agreement amendment A for more details)

     As a Company employee, you will be expected to abide by the Company's rules
and regulations.  You will be expected to sign and comply with an Employment
Confidential Information, and Invention Assignment
<PAGE>

Agreement which requires, among other provisions, the assignment of patent
rights to any invention made during your employment at the Company and non-
disclosure of proprietary information.

     In the event of any dispute or claim relating to or arising out of our
employment relationship, you and the Company agree that all such disputes shall
be fully and finally resolved by binding arbitration conducted by the American
Arbitration Association in San Mateo County, California.  However, we agree that
this arbitration provision shall not apply to any disputes or claims relating to
or arising out of the misuse or misappropriation of the Company's trade secrets
or proprietary information.

     To indicate your acceptance of the Company's offer, please sign and date
this letter in the space provided below and return it to me.  A duplicate
original is enclosed for your records.  This letter, along with the agreement
relating to proprietary rights between you and the Company, sets forth the terms
of your employment with the Company and supersedes any prior representations or
agreements, whether written or oral.  This letter may not be modified or amended
except by a written agreement, signed by an officer of the Company and you.

     We look forward to working with you.

                                   Sincerely,

                                   REPLICASE, INC.

                                   Mark Pincus
                                   President and CEO

ACCEPTED AND AGREED TO this

24 day of June 1998.

      /s/ Tony Rodoni
----------------------------
      [employee name]

Enclosures:  Duplicate Original Letter,
             Employment Confidential Information,
             Employment agreement amendment A, and
             Invention Assignment Agreement (To be supplied)(1)

(1)  Mr. Rodoni listed no prior inventions in his Employment Confidential
     Information and Invention Assignment Agreement.

<PAGE>

                       Employment agreement amendment A
                       --------------------------------

Employee name: Tony Rodoni.
               -----------

This agreement amendment provides clarifications and modifications to the
standard employee's agreement and supersedes the original subject as appears in
the employee agreement.

Employee benefit package and insurance:
--------------------------------------

 .    Health Insurance (Lifeguard HMO).

 .    Dental insurance (Delta)

 .    Vision insurance

 .    Life and Disability insurance

 .    Section 125

 .    401K program (no company contribution)

Stocks option
-------------

 .    You will vest into 35% at the end of one year and then vest into the
     remaining 65% monthly over the following 3 years.

 .    In case of acquisition or merger your vesting will be accelerated by 50% of
     the remaining amount.

 .    Your stock option price will be $0.10 a share.

Revenue Definition
------------------

 .    Defined as GAAP recognizable and date certain.

 .    In the case of booked revenue which later turns into bad debts, those
     revenues will be backed out of this agreement.

 .    Includes all revenue from direct enterprise sales and OEM licensing deals.<PAGE>

                                                                    EXHIBIT 10.7
[LETTERHEAD]

July 15, 1999

PERSONAL & CONFIDENTIAL
Ms.  Radha R.  Basu
21777 Vintage Lane
Saratoga, California 95070

Dear Radha:

On behalf of Tioga Systems, Inc. (the "Company" or "Tioga") I am pleased to
offer you the position of Chief Executive Officer and President of the Company.
The terms of your employment relationship with the company are as set forth
below and as approved by the Company's Board of Directors.

1.  Position. You will become the Chief Executive Officer and President of the
    Company, reporting to the Board of Directors. As such, you will have such
    responsibilities commensurate with your position and such additional
    responsibilities as may reasonably be determined by the Board of Directors
    of the Company (the "Board"). You will also be appointed a member of the
    Board at the soonest practical date following your commencement of
    employment.

2.  Base Salary and Performance Bonus. You will be paid a base salary of no less
    than $16,667 per month. Your salary will be payable in accordance with the
    Company's standard payroll policies (subject to normal required
    withholding). You will receive a vacation and benefit package similar to
    that provided for all other executive level employees. You will also be
    eligible for an annual bonus equal to 50% of your base salary for the prior
    Fiscal Year upon achieving performance criteria mutually agreed upon by you
    and the Board. For the Fiscal Year ended December 31, 1999, you will be
    guaranteed a bonus of 50% of your salary pro rated for the remainder of that
    Fiscal Year.

3.  Stock Options. Subject to the approval of the Board of Directors of the
    Company, you will be granted an incentive stock option to purchase 1,680,189
    shares of Common Stock of the Company at an exercise price per share of
    $0.90 (which represents the fair market value of the Common Stock of the
    Company at the date of the grant). Your option will be granted under the
    Tioga Systems, Inc. 1998 Option Plan, in accordance with and subject to each
    term of the Company's standard form of option agreement. These options will
    vest 25% at the end of your first year of employment and thereafter monthly
    at 1/48 per month of the total option amount, so
<PAGE>

    that at the end of your fourth year of employment you will be vested in 100%
    of this incentive stock option grant. However, if before the end of the one
    year anniversary of your employment with the Company, you should be
    terminated for Cause or resign voluntarily from the Company other than for
    Good Reason, there will be no vesting. "Cause" and "Good Reason" are defined
    in Section 5 of this Employment Agreement.

4.  At-Will Employment. You will be an employee-at-will, meaning that either you
    or the Company can terminate your employment relationship at any time, for
    any reason, with or without cause, and with or without notice. You agree to
    devote substantially all of your business time and attention to the Company.
    Nevertheless, you shall be permitted to serve as a member of the board of
    directors of Seec, Inc. and of Connectinc.com, as well as such other boards
    of directors of for-profit and not-for-profit organizations as the Board may
    reasonably approve.

5.  Termination of Employment:

     (a)  In the event your employment is terminated by the Company with or
without Cause, as defined herein, or you resign with or without Good Reason, as
defined herein, you will be entitled to payment of (i) accrued salary, benefits
and reimbursable expenses owing to you through the date of such termination, and
(ii) the bonus you earned for the Fiscal Year preceding the date of your
termination if it has not been paid as of the date of your termination.

     (b)  If your employment is terminated by the Company, for any reason other
than for Cause, or is terminated by you for Good Reason, in addition to the
payments provided for in Section 5(a), you will be entitled to receive a
severance package consisting of (i) your base monthly salary, paid as though you
were still employed by the Company for a period of 12 months in installments,
subject to appropriate deductions, (ii) continued participation in all benefit
plans as an employee for a period of 12 months, (iii) vesting of all stock
options granted to you that would have vested by the end of the month of your
termination if your employment had not been terminated, and (iv) bonus for the
Fiscal Year in which your employment is terminated, pro rated on a monthly basis
based on your termination date, if you have achieved the performance criteria
mutually agreed upon by you and the Board for that Fiscal Year. The Company
shall have the obligation to make the payments and provide the benefits provided
for in this section regardless of your income or efforts to mitigate, if any,
however it shall have the right to stop the payments and benefits in Section
5(b)(i) and (ii) if at any time prior to the expiration of twelve months after
termination, you become otherwise employed in another full time salaried
position with benefits. In order to receive this severance package, you will be
required to sign a release in a form acceptable to you and the Company, of any
and all claims that you may have against the Company.

     (c)  "Cause" means a determination in the reasonable good faith of a
majority of the Board that you have (i) engaged in materials act in violation of
the law, except that with regard to that act, you are not subsequently convicted
of a felony or do not enter a plea of guilty or nolo contendre to a felony
(except for ordinary traffic violations); you will be entitled to receive the
severance package provided for in Section 5(b)(i through
<PAGE>

iv), (ii) materially breached your fiduciary duty to the Company; (iii)
unreasonably refused to perform the good faith, lawful policies or instructions
of the Board; or (iv) failed to fully and faithfully perform your material
obligations under this Employment Agreement after having been given thirty days
written notice of any such failure and an opportunity to cure. "Good Reason"
means (i) you are assigned significant duties inconsistent with your position in
the Company or your employment terms and responsibilities are materially
diminished by the Company, (ii) you are required to relocate to a regular work
location that is more than 50 miles from the Company's offices where you
regularly work, without your approval or (iii) a material breach by the Company
of its obligations under this Employment Agreement. If you wish to resign your
employment for Good Reason, you will be required to give the Company 30 days
written notice of resignation. The Company will have 30 days to cure the
reason(s) for your resignation. If the reason(s) for your resignation is not
cured within 30 days, the period of time you have to exercise your stock options
shall begin to run following the expiration of the cure period.

6.  Change in Ownership Event. For a period of twelve months following a "Change
    In Ownership Event" ("Change In Ownership Event" being defined as any sale
    of all or substantially all of the Company's assets or any merger,
    consolidation or stock sales which results in the holders of the Company's
    capital stock immediately prior to such transaction owning less than 50% of
    the voting power of the Company's capital stock immediately after such
    transaction), if (a) your employment is terminated by the Company or its
    successor for any reason other than for Cause (as defined in Section 5 of
    this Employment Agreement); or (b) you resign for Good Cause, you will be
    entitled to receive a severance package consisting of (i) vesting of any
    unvested stock options that were issued to you by the Company, (ii) 12
    months of your base salary at that time, payable in a lump sum, subject to
    normal required withholding, (iii) continued participation in all benefit
    plans as an employee for a period of 12 months, and (iv) bonus for the
    Fiscal Year in which your employment is terminated, pro rated on a monthly
    basis based on your termination date, if you have achieved the performance
    criteria mutually agreed upon by you and the Board for that Fiscal Year. You
    shall have a period of 90 days following termination of your employment
    pursuant to Section 6(a) to exercise such options. If you wish to resign
    your employment pursuant to Section 6(b), you will be required to give the
    Company 30 days written notice of resignation. The Company will have 30 days
    to cure the reason(s) for your resignation. If the reason(s) for your
    resignation is not cured within 30 days, you shall have a period of 90 days
    following the cure period to exercise such options. In order to receive this
    severance package, you will be required to sign a release in a form
    acceptable to you and the Company, of any and all claims that you may have
    against the Company.

7.  Representation and Warranty. You represent and warrant to the Company that
    the performance of your duties will not violate any agreements or trade
    secrets of any other person or entity.

8.  Standard Employee Agreements. You will be expected to sign and comply with
    the Company's standard Employment, Confidential Information and Invention
<PAGE>

    Assignment Agreement (the "Employee NDA") which requires, among other
    provisions, the assignment of patent rights to any invention made during
    your employment at the Company and non-disclosure of proprietary
    information. Your employment will be contingent upon and not be deemed
    effective until you have executed and returned the Employee NDA to the
    Company. As provided in the Employee NDA, in the event of any dispute or
    claim relating to or arising out of our employment relationship, you and the
    Company agree that all such disputes shall be fully and finally resolved by
    binding arbitration. In addition, you will abide by the Company's strict
    policy that prohibits any employee from using or bringing with him or her
    from any previous employer any confidential information, trade secrets, or
    proprietary materials or processes of such former employer. You also agree
    that, during the term of your employment with the Company, you will not
    actively engage in any other employment, occupation, consulting or other
    business directly or indirectly related to the business in which the Company
    is now involved or becomes involved during the term of your employment, nor
    will you engage in any other activities that conflict with your obligations
    to the Company.

9.  Start Date. Your employment with the Company will commence on Thursday, July
    15,1999.

10. Federal Immigration Law. For purpose of federal immigration law, you will be
    required to provide the Company documentary evidence of your identity and
    eligibility for employment in the United States. Such documentation must be
    provided to us within three (3) business days of your commencement date, or
    our employment relationship you may be terminated.

11. Entire Agreement. This Employment Agreement, together with your Stock Option
    Agreement, and your Confidentiality and Assignment of Inventions Agreement,
    which are incorporated by reference, constitutes the entire agreement
    between the parties and supersedes all other agreements or understandings.
    This Employment Agreement can only be changed in writing, signed by you and
    the Chairman of the Board of the Company.

Radha, on behalf of the Board, let me indicate how pleased I am to extend this
offer, and how much I look forward to working with you.  Please indicate your
acceptance by signing and returning the enclosed copy of this letter.

Sincerely,

TIOGA SYSTEMS, INC.

By:     /s/ Mark Pincus
    -----------------------
Title:  Chairman & CEO
       --------------------
        Mark Pincus
<PAGE>

The forgoing terms and conditions are hereby accepted:

Signed: /s/ Radha R. Basu
       --------------------------
Print Name: RADHA R. BASU
           ----------------------
Date:       July 15, 1999
     ----------------------------

(Please note:  Ms. Basu listed no prior inventions in her Employment
               Confidential Information and Invention Assignment Agreement.)

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