Document:

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                                                                    Exhibit 10.2

                       INDEPENDENT CONTRACTOR AGREEMENT

                                    between

                         NCO PORTFOLIO FUNDING, INC.,

                                      and

                               JOSEPH K. RENSIN
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                               TABLE OF CONTENTS

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                                                                           Page
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SECTION 1.         DUTIES.................................................    1
SECTION 2.         COMPENSATION...........................................    1
   SECTION 2.1.     BASE COMPENSATION.....................................    1
   SECTION 2.2.     DEATH OF CONTRACTOR...................................    2
   SECTION 2.3.     REIMBURSEMENT OF EXPENDITURES.........................    2
   SECTION 2.4.     BENEFIT PLANS AND FRINGE BENEFITS.....................    2
   SECTION 2.5.     REGISTRATION RIGHTS...................................    3
SECTION 3.         TERM OF ENGAGEMENT.....................................    7
SECTION 4.         COVENANTS..............................................    7
   SECTION 4.1.     S-3 ELIGIBILITY.......................................    7
   SECTION 4.2.     TRADEMARK.............................................    7
   SECTION 4.3.     NONDISPARAGEMENT......................................    7
   SECTION 4.4.     COUNTERCLAIMS.........................................    7
   SECTION 4.5.     NONCOMPETITION AND NONSOLICIATION.....................    8
SECTION 5.        COMPLIANCE WITH OTHER AGREEMENTS; AUTHORITY.............    8
SECTION 6.         SEVERABILITY...........................................    8
SECTION 7.         WAIVER.................................................    8
SECTION 8.         MODIFICATION...........................................    9
SECTION 9.         HEADINGS...............................................    9
SECTION 10.       COUNTERPARTS............................................    9
SECTION 11.       RULES OF CONSTRUCTION...................................    9
SECTION 12.       SURVIVAL OF REPRESENTATIONS AND WARRANTIES..............    9
SECTION 13.       BINDING EFFECT; ASSIGNMENT..............................    9
   SECTION 13.1.     BINDING EFFECT.......................................    9
   SECTION 13.2.     ASSIGNMENT BY THE COMPANY............................   10
   SECTION 13.3.     ASSIGNMENT BY THE CONTRACTOR.........................   10
SECTION 14.       EQUITABLE RELIEF........................................   10
SECTION 15.       ENTIRE AGREEMENT........................................   10
SECTION 16.       GOVERNING LAW...........................................   10
SECTION 17.       NOTICES.................................................   11
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                                      -i-
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                            CREDITRUST CORPORATION
                       INDEPENDENT CONTRACTOR AGREEMENT

     THIS INDEPENDENT CONTRACTOR AGREEMENT (the "Agreement") is made and entered
into by and between NCO Portfolio Funding, Inc., a Delaware corporation ("NCOP"
or the "Company") and JOSEPH K. RENSIN (the "Contractor"), as of
__________________________, 2000 (the "Effective Date").

                             BACKGROUND STATEMENT

     Creditrust Corporation, a Maryland corporation ("Creditrust"), has, as of
the date hereof, merged with and into NCOP, with NCOP as the surviving
corporation. The Contractor has substantial knowledge of the Company's business;
the Company considers it to be in its best interest to have the benefit of the
Contractor's availability and services as provided in this Agreement; and the
Contractor is willing to provide such availability and services to the Company
in accordance with the provisions of this Agreement.

     THEREFORE, in consideration of and reliance upon the foregoing background
statement and the covenants, representations and warranties contained in this
Agreement, and other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the Company and the Contractor
agree as follows:

                                     TERMS

SECTION 1.    DUTIES.

     The Company hereby engages the Contractor to provide consulting services to
the Company on an as-needed, as-requested basis.  The Contractor shall be
responsible only for reporting to the Chief Executive Officer of the Company.

SECTION 2.    COMPENSATION.

SECTION 2.1.  BASE COMPENSATION.

     During the term of the Contractor's engagement under this Agreement, the
Company shall pay the Contractor as follows:

     (a)  During the Term (as defined herein), the Company shall pay the
          Contractor base compensation at the annualized rate of $400,000. Such
          base compensation shall be paid in accordance with the Company's
          normal payroll policies for senior executives of the Company, but no
          less than monthly.

     (b)  The Contractor shall be obligated to provide no more than twenty (20)
          hours of services in any month to the Company. The Company shall pay
          the Contractor in addition to the fee provided for in Section 2.1(a)
          above, a
<PAGE>

          fee of $1,500 for each day or any part of a day during which the
          Contractor performs services for the Company in excess of the
          aforementioned twenty (20) hours per month. In the event twenty (20)
          full hours are not utilized for the Consultant's services in a given
          month, those hours not utilized shall not be carried over to the
          following or any subsequent months.

     Contractor, as an independent contractor, shall comply with all applicable
federal, state or local laws and regulations pertaining to the payments provided
for above, including those requiring payment and/or withholding for income
taxes, FICA contributions and any other such charges.  The Company shall not
withhold any funds to pay any such amounts, and the Contractor shall indemnify,
defend and hold the Company harmless from and against any and all claims,
expenses, taxes, penalties, interests, and other charges or liabilities asserted
against or incurred by the Company as a result of Contractor's actual or alleged
failure to comply with all such laws and regulations.

SECTION 2.2.  DEATH OF CONTRACTOR.

     Within forty-five (45) days after the Contractor's death during the Term,
the Company shall pay to the Contractor's estate, or his heirs, the amount of
any accrued and unpaid compensation or reasonable, unreimbursed expenses as of
the date of death.

SECTION 2.3.  REIMBURSEMENT OF EXPENDITURES.

     The Company shall reimburse the Contractor for all reasonable expenditures
(consistent with Company policy concerning expenses incurred by and reimbursed
to senior executives of the Company) that Contractor incurs in the course of his
engagement by the Company, including expenditures for (i) transportation,
lodging and meals during business trips, (ii) business meals and other business-
related expenses, (iii) supplies and business equipment, and (iv) cellular
telephone charges.  The types and amounts of expenses to be repaid, the nature
and timing of repayment, and the required documentation, shall be the same for
the Contractor as those for top executives of the Company.

SECTION 2.4.  BENEFIT PLANS AND FRINGE BENEFITS.

     (a)  Contractor shall, at the Company's expense, be eligible to participate
          in any medical and dental benefits plan at least as favorable as those
          made available to the Chief Executive Officer of the Company.

     (b)  During the first eighteen (18) months of the Term, the Company shall
          pay the Contractor a car allowance of one thousand dollars ($1,000)
          per month, payable in accordance with normal payroll policies for
          senior executives of the Company, but no less than monthly.

     (c)  Creditrust granted Contractor options to purchase 50,000 shares of

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          Creditrust common stock at an exercise price of $0.53 per share (the
          "Stock Options") on June 8, 2000. The Company shall cause the Stock
          Options to be treated as provided in Section 2.10 of the Amended and
          Restated Merger Agreement dated as of September 20, 2000 between
          Creditrust and NCOP.

     (d)  The Company shall cause Contractor to become fully vested as of the
          Effective Date in all contributions made by either Contractor or
          Creditrust to Contractor's 401(k) retirement account with the
          Company's predecessor, Creditrust.

SECTION 2.5.  REGISTRATION RIGHTS.

     (a)  The Company acknowledges that Contractor is the beneficial owner of
          approximately 5.2 million shares of the Company's common stock. Such
          stock and any other securities issued or issuable with respect to such
          stock by way of a stock dividend or stock split or in connection with
          a combination of shares, recapitalization, merger, consolidation or
          other reorganization are referred to herein as "Registrable
          Securities." Securities shall cease to be Registrable Securities after
          such securities (i) have been effectively registered under the
          Securities Act of 1933, as amended (the "Securities Act") and disposed
          of in accordance with a registration statement filed under the
          Securities Act covering them or (ii) are or may be distributed to the
          public pursuant to Rule 144 promulgated under the Securities Act
          without being subject to volume limitations.

     (b)  The Company covenants and agrees that if on or after ninety (90) days
          after the Effective Date, but no more than one time for each 12 month
          period following such date, Company receives a written request from
          Contractor to register no less than five hundred thousand (500,000)
          and no more than two million six hundred thousand (2,600,000) shares
          of Registrable Securities, then within 45 days after receipt of such
          notice (the 45th day after such notice, the "Filing Date") the Company
          shall file a registration statement and cause such registration
          statement to become effective under the Securities Act at the earliest
          possible date after such notice (such date, the "Effectiveness Date")
          with respect to the offering and sale or other disposition of such
          Registrable Securities as Contractor desires to have covered by such
          registration statement. The Company shall continuously maintain the
          effectiveness of such registration statement until the earlier of (i)
          90 days after the effective date of the registration statement or (ii)
          the consummation of the distribution of all Registrable Securities
          covered by such registration statement by the Contractor (the
          "Effectiveness Period"). The Company shall not include any securities
          owned by any other person other than the Contractor in any such
          registration statement without the consent of the Contractor. Each

                                      -3-
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     notice to the Company requesting the registration of Registrable Securities
     shall set forth (1) the number of Registrable Securities to be included;
     and (2) the proposed manner of sale. A registration statement will not
     count as complying with the terms hereof unless it is declared effective by
     the U.S. Securities and Exchange Commission (the "SEC") and remains
     continuously effective for the Effectiveness Period. Contractor shall have
     the right to demand registration of Registrable Shares under this Section
     2.5(b) no more than twice during the Term, provided, that the second
                                                --------
     registration shall not occur sooner than sixty (60) days after the
     conclusion of the first Effectiveness Period.

(c)  Contractor agrees, if requested by the managing underwriter in an
     underwritten offering, not to effect any public sale or distribution of
     Registrable Securities or of securities of the Company of the same class
     (except as part of such underwritten registration), during the 10-day
     period prior to, and during the 90-day period beginning on, the closing
     date of each underwritten offering made pursuant to such registration
     statement, to the extent timely notified in writing by the Company or the
     managing underwriter.

(d)  If, at any time when Registrable Securities are held by Contractor, the
     Company proposes to register any of its securities under the Securities Act
     (other than a registration on Form S-4 or S-8 or any successor form
     thereto), whether or not for sale for its own account, and the registration
     form to be used may be used to register Registrable Securities, it will
     each such time give prompt written notice to Contractor of Company's
     intention to do so and, upon the written request of Contractor made within
     10 days after the receipt of any such notice, the Company will use its best
     efforts to effect the registration (a "Piggyback Registration") under the
     Securities Act of all Registrable Securities which the Company has been so
     requested to register by the Contractor.

(e)  Subject to Section 2.5(f), if a Piggyback Registration is an underwritten
     registration, and the managing underwriter thereof advises the Company in
     writing that in its opinion the number of securities requested to be
     included in such registration exceeds the number that can be sold in such
     offering without adversely affecting the marketability of the offering, the
     Company will include in such registration (i) first, the securities the
     Company proposes to sell for its own account in such registration, (ii)
     second, the Registrable Securities requested to be included in such
     registration and other securities requested to be included in such
     registration, pro rata, based on the number of Registrable Securities and
     other securities requested to be included in such registration.

(f)  Notwithstanding Section 2.5(e), if a Piggyback Registration is an

                                      -4-
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     underwritten secondary registration solely on behalf of holders of the
     Company's securities, and the managing underwriter advises the Company in
     writing that in its opinion the number of securities requested to be
     included in such registration exceeds the number that can be sold in such
     offering without adversely affecting the marketability of the offering, the
     Company will include in such registration the securities requested to be
     included therein by the holders requesting such registration (including
     Contractor) pro rata among such holders on the basis of the number of
     shares owned by each such holder.

(g)  The Company shall take all steps necessary to ensure compliance with all
     applicable federal and state securities laws applicable to sales by
     Contractor pursuant to any registration in which Registrable Securities are
     sold pursuant to Contractor's rights hereunder and to cause such
     Registrable Securities to be listed on each securities exchange on which
     similar securities issued by the Company are then listed.

(h)  All fees and expenses incident to the performance of or compliance with the
     provisions of this Section 2.5 of this Agreement shall be borne by the
     Company, other than Contractor's out-of-pocket expenses incurred in
     connection with the engagement of professional advisors and all
     underwriting discounts and commissions.

(i)  The Company agrees to indemnify and hold harmless Contractor from and
     against any and all losses, claims, damages and liabilities (collectively,
     "Losses") to which Contractor may become subject caused by any untrue
     statement or alleged untrue statement of a material fact contained in any
     registration statement or prospectus, or caused by any omission or alleged
     omission to state therein a material fact required to be stated therein or
     necessary to make the statements therein, in the light of the circumstance
     in which they were made, not misleading, and will reimburse Contractor for
     any legal or other expenses reasonably incurred by Contractor in connection
     with investigating or defending any such Losses as such expenses are
     incurred; provided, however, that the Company will not be liable insofar as
               --------  -------
     such Losses are caused by any such untrue statement or omission or alleged
     untrue statement or omission based upon information furnished in writing to
     the Company by Contractor expressly for use therein.

(j)  Contractor agrees to indemnify and hold harmless the Company, the Company's
     directors, the Company's officers who sign the registration statement and
     any person controlling the Company to the same extent as the foregoing
     indemnity from the Company to Contractor set forth in Section 2.5(i), but
     only with reference to, and in conformity with, information relating to
     Contractor furnished in writing by Contractor

                                      -5-
<PAGE>

     expressly for use in a registration statement and will reimburse any legal
     or other expenses reasonably incurred by the Company in connection with
     investigating or defending any such Losses as such expenses are incurred.

(k)  If Contractor desires to sell the Registrable Securities covered by his
     request by means of an underwritten offering the Company shall approve
     (such approval not to be unreasonably withheld exclusive of the offer price
     and number of shares as to which the Company shall not have any approval
     rights) in writing such underwritten offering, including, without
     limitation, the selection by the Contractor of the underwriter(s),
     investment banker(s) and/or manager(s) for such offering and the terms and
     conditions of the underwriting agreement relating to such offering.

(l)  If the Company effects a registration in which the Contractor is to
     participate, the Contractor shall complete, execute, acknowledge and/or
     deliver such questionnaires, powers of attorney, indemnification
     agreements, custody agreements, holdback agreements, underwriting
     agreements and other documents, certificates and instruments as are
     required by the Company or any underwriter(s) or are otherwise necessary in
     connection with the registration and offering.  Contractor shall promptly
     provide to the Company such information concerning his ownership of Company
     securities, the intended method of distribution and such other information
     as may be required by applicable law or regulation or as may be reasonably
     requested by the Company.

(m)  The Company shall not be obligated to effect a registration pursuant
     hereto, or file any amendment or supplement thereto, and may suspend the
     Contractor's rights to make sales pursuant to an effective registration
     pursuant hereto, at any time when the Company, in the good faith judgment
     of its Board of Directors, reasonably believes that the filing thereof at
     the time requested, or the offering of securities pursuant thereto, would
     (i) materially and adversely affect a pending or proposed acquisition,
     merger, recapitalization, consolidation, reorganization or similar
     transaction, or negotiations, discussions or pending proposals related
     thereto, or (ii) be seriously detrimental, excluding a change in the price
     of the Company's stock, to the Company and its stockholders, in which event
     the Company has the right to defer filing of a registration statement for a
     period of not more than 45 days after receipt of the demand notice,
     provided, however, the Company shall not utilize this right described in
     --------  -------
     this Section 2.5(m) more than once in any 12-month period.  If the Company
     suspends the Contractor's rights to make sales pursuant hereto, the
     applicable registration period shall be extended by the number of days of
     such suspension or, at the written election of the Contractor, a demand
     registration may be cancelled and such cancellation shall not be deemed the
     use of such demand registration by the Contractor hereunder.

                                      -6-
<PAGE>

SECTION 3.     TERM OF ENGAGEMENT.

     The Contractor's term of engagement under this Agreement shall begin on the
Effective Date, and shall continue through the third anniversary of the
Effective Date (the "Term").  In the event the Contractor's engagement is
terminated prior to the end of the Term for any reason other than the
Contractor's death, the Company shall pay or cause to be paid any and all
accrued and unpaid compensation or unreimbursed expenses (as of the date of such
termination) and any and all fees that otherwise would have been due and payable
through the end of the Term.

SECTION 4.     COVENANTS.

SECTION 4.1.   S-3 ELIGIBILITY.

     The Company shall use commercially reasonable efforts to become eligible to
register shares of the Company's stock with the SEC through the use of Form S-3.

SECTION 4.2.   TRADEMARK.

     To the Company's best knowledge, the Company represents and warrants that
it owns trademarks to the Creditrust name, the Creditrust logo (the "Logo
Trademark"), and the name and logo of Creditrust combined (the "Name/Logo
Trademark").  The Contractor hereby purchases, and the Company hereby sells and
conveys to Contractor, all of Company's right, title and interest in the Logo
Trademark for a total purchase price of one thousand dollars ($1,000) cash paid,
receipt of which by the Company is hereby acknowledged, provided, however, that
                                                        --------  -------
notwithstanding Contractor's ownership of the Logo Trademark, the Company shall
not incur any liability as a result of occasional, inadvertent, internal use of
the Logo Trademark by Company employees. The Company covenants that, beginning
on the Effective Date and forever thereafter it shall not exploit or transfer
the Name/Logo Trademark in any manner whatsoever. The Contractor covenants that,
beginning on the Effective Date and forever thereafter he shall not use the Logo
Trademark in connection with a business involved in the purchase of, the
management of or the collection of defaulted debt other than defaulted
mortgages.

SECTION 4.3.   NONDISPARAGEMENT.

     Neither the Company nor the Contractor shall speak or act in any manner
that is intended to, or does in fact, damage the goodwill or the business or
reputation of the other party or any of its affiliates, except that either party
may disclose such information as is reasonably required to protect or enforce
its legal rights hereunder.

SECTION 4.4.   COUNTERCLAIMS.

     The existence of any claim or cause of action that either party may have
against the other party shall not at any time constitute a defense to the
enforcement by the party against which the claim or cause of action may exist
because of the restrictions or rights

                                      -7-
<PAGE>

provided by this Section 4.

SECTION 4.5.   NONCOMPETITION AND NONSOLICIATION.

     During the Term of this Agreement, the Contractor shall not, directly or
indirectly:

     (a)  induce any employee, customer, independent contractor or supplier of
the Company to terminate employment or any other relationship with the Company;
or

     (b)  engage in (as a principal shareholder, partner, director, officer,
agent, employee, consultant or otherwise) any business operating within the
United States that is involved in the purchase of, the management of or the
collection of defaulted debt other than defaulted mortgages; provided, however,
                                                             --------  -------
that nothing contained in this Section 4.5(b) shall prevent the Contractor from
holding for investment no more than five percent (5%) of any class of equity
securities of a company whose securities are publicly traded on a national
securities exchange or in a national market system.

SECTION 5.     COMPLIANCE WITH OTHER AGREEMENTS; AUTHORITY.

     The Contractor represents and warrants to the Company that he is free to
enter this Agreement and that the execution of this Agreement and the
performance of his obligations under this Agreement shall not, as of the date of
this Agreement or with the passage of time, conflict with, cause a breach of, or
constitute a default under any agreement to which the Contractor is a party or
may be bound.  The Company represents and warrants that it is authorized by all
necessary corporate action to enter into this Agreement and to perform its
obligations hereunder, that the execution and performance of its obligations
hereunder shall not, as the date of this Agreement or the with the passage of
time, conflict with, cause a breach of, or constitute a default under any
agreement to which it is a party.

SECTION 6.     SEVERABILITY.

          Every provision of this Agreement is intended to be severable. If any
provision or portion of a provision is illegal or invalid, then the remainder of
this Agreement shall not be affected.  Moreover, any provision of this Agreement
which is determined to be unreasonable, arbitrary or against public policy shall
be modified as necessary so that it is not unreasonable, arbitrary or against
public policy.

SECTION 7.     WAIVER.

     A waiver by a party to this Agreement of any breach of this Agreement by
the other party shall not operate or be construed as a waiver of any other
breach or a waiver of the same breach on a future occasion.  No delay or
omission by either party to enforce any rights it may have under this Agreement
shall operate or be construed as a waiver.

                                      -8-
<PAGE>

SECTION 8.     MODIFICATION.

     This Agreement may not be modified or amended except by a writing signed by
both parties.

SECTION 9.     HEADINGS.

     The various headings contained in this Agreement are inserted only as a
matter of convenience and in no way define, limit or extend the scope or intent
of any of the provisions of this Agreement.

SECTION 10.    COUNTERPARTS.

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

SECTION 11.    RULES OF CONSTRUCTION.

     No provision of this Agreement shall be interpreted or construed against
any party because that party or its legal representative drafted that provision.
Unless the context of this Agreement clearly requires otherwise:  (i) references
to the plural include the singular, the singular the plural, and the part the
whole, (ii) references to one gender include all genders, (iii) "including" and
"may include" have the inclusive meaning frequently identified with the phrases
"including but not limited to" and "including without limitation", (iv)
references to "hereunder," "herein" or "hereof" relate to this Agreement as a
whole, and (v) the terms "dollars" and "$" refer to United States dollars.  Any
reference herein to any statute, rule, regulation or agreement, including this
Agreement, shall be deemed to include such statute, rule, regulation or
agreement as it may be modified, varied, amended or supplemented from time to
time.  Any reference herein to any person shall be deemed to include the heirs,
personal representatives, successors and permitted assigns of such person.

SECTION 12.    SURVIVAL OF REPRESENTATIONS AND WARRANTIES.

     The respective representations and warranties of the parties to this
Agreement shall survive the execution of this Agreement and continue without
limitation.

SECTION 13.    BINDING EFFECT; ASSIGNMENT.

SECTION 13.1.  BINDING EFFECT.

     Except as otherwise provided herein, this Agreement shall be binding upon
and inure to the benefit of the parties hereto and their respective legal
representatives, administrators, executors, successors and permitted assigns.

                                      -9-
<PAGE>

SECTION 13.2.  ASSIGNMENT BY THE COMPANY.

     This Agreement may and shall be assigned or transferred to, and shall be
binding upon and shall inure to the benefit of, any successor of the Company,
and any such successor shall be deemed substituted for all purposes for the
"Company" under the terms of this Agreement.  As used in this Agreement, the
term "successor" shall mean any person, firm, corporation or business entity
that at any time, whether by merger, purchase, or otherwise, acquires a majority
of the assets of the Company.  Notwithstanding such assignment, the Company
shall remain, with such successor, jointly and severally liable for all its
obligations hereunder.  Except as herein provided, this Agreement may not
otherwise be assigned by the Company.

SECTION 13.3.  ASSIGNMENT BY THE CONTRACTOR.

     This Agreement is not assignable by the Contractor.  This Agreement shall
inure to the benefit of and be enforceable by the Contractor's personal or legal
representatives, executors, and administrators, successors, heirs, distributees,
devisees, and legatees.  If the Contractor should die while any amounts payable
to the Contractor hereunder remain outstanding, all such amounts, unless
otherwise provided herein, shall be paid in accordance with the terms of this
Agreement to the Contractor's devisee, legatee, or other designee or, in the
absence of such designee, to the Contractor's estate.

SECTION 14.    EQUITABLE RELIEF

     The parties hereto acknowledge that the breach of any provision of this
Agreement will cause irreparable harm for which any remedies at law would be
inadequate.  Accordingly, in the event of any breach or threatened or attempted
breach of any provision hereof by either party, the other party shall, in
addition to all other remedies, be entitled to obtain any form of equitable
relief, including a temporary or permanent injunction restraining such breach or
threatened breach and specific performance of the provisions hereof, without
being required to show actual or special damage or to furnish any bond or other
security.  The parties hereby acknowledge and agree that the parties' agreement
with respect to the foregoing is a material inducement for each party to execute
this Agreement

SECTION 15.    ENTIRE AGREEMENT.

     With respect to its subject matter, this Agreement constitutes the entire
understanding of the parties superseding all prior agreements, understandings,
negotiations and discussions between them, whether written or oral, and there
are no other understandings, representations, warranties or commitments with
respect thereto.

SECTION 16.    GOVERNING LAW.

     This Agreement shall be governed by and construed in accordance with the
laws of the State of Maryland applicable to agreements made and to be performed
in that State,

                                     -10-
<PAGE>

without regard to any otherwise applicable conflict of laws principles.

SECTION 17.    NOTICES.

     Any notices or other communications required or permitted under this
Agreement shall be in writing and shall be deemed to have been duly given and
delivered when delivered in person, three (3) days after being mailed postage
prepaid by certified or registered mail with return receipt requested, or when
delivered by overnight delivery service to the recipient at the following
address, or to such other address as to which the other party subsequently shall
have been notified in writing by such recipient:

     If to the Company:

          NCO Portfolio Funding, Inc.
          _________________
          _________________
          _________________
          _________________

     With a copy (not itself constituting notice) to:

          __________________
          __________________
          __________________
          __________________
          __________________

     If to the Contractor:

          __________________
          __________________
          __________________
          __________________

     With a copy (not itself constituting notice) to:

          Williams & Connolly LLP
          Attn: Kevin Hodges, Esq.
          725 Twelfth Street, N.W.
          Washington, D.C. 20005

                     [SIGNATURES APPEAR ON FOLLOWING PAGE]

                                     -11-
<PAGE>

     IN WITNESS WHEREOF, the Company has caused this Agreement to be executed by
its duly authorized officer, and Contractor has signed this Agreement, all as of
the Effective Date hereof.

NCO PORTFOLIO FUNDING, INC.

By:  __________________________
Name:  ________________________
Title:  _______________________

CONTRACTOR

_______________________________
Joseph K. Rensin<PAGE>
                                                                     EXHIBIT 4.1

ALIGN TECHNOLOGY, INC.

INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

THIS CERTIFICATE IS TRANSFERABLE
IN CANTON, MA AND NEW YORK, NY

SEE REVERSE FOR CERTAIN DEFINITIONS

CUSIP 016255 10 1

This certifies that
is the record holder of
FULLY PAID AND NONASSESSABLE SHARES OF COMMON STOCK, $0.0001 PAR VALUE, OF ALIGN
TECHNOLOGY, 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 registered by the Registrar.

     WITNESS the facsimile seal of the Corporation and the facsimile signatures
of its duly authorized officers.

Dated:

SECRETARY

CHAIRMAN

COUNTERSIGNED AND REGISTERED:
EQUISERVE TRUST COMPANY, N.A.
TRANSFER AGENT AND REGISTRAR

BY
AUTHORIZED SIGNATURE

<PAGE>

The Corporation shall furnish without charge to each stockholder who so requests
a statement of the powers, designations, preferences and relative,
participating, optional, or other special rights of each class of stock of the
Corporation or series thereof and the qualifications, limitations or
restrictions of such preferences and/or rights. Such requests shall be made to
the Corporation's Secretary at 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:

<TABLE>
<CAPTION>
<S>                     <C>
        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)
</TABLE>

Additional abbreviations may also be used though not in the above list.

    For Value Received,               hereby sell(s), assign(s) and transfer(s)
unto

        PLEASE INSERT SOCIAL SECURITY OR OTHER
        IDENTIFYING NUMBER OF ASSIGNEE

(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

       shares of the common stock represented by the within certificate, and do
hereby irrevocably constitute and appoint                     Attorney to
transfer the said stock on the books of the within named Corporation with full
power of substitution in the premises.

Dated
X
X
NOTICE:

THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON
THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR
ENLARGEMENT OR ANY CHANGE WHATEVER.

Signature(s) Guaranteed

By
THE SIGNATURE(S) 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.

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00019-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00019-of-00352.parquet"}]]