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                                                                    EXHIBIT 10.3

                               FOUNDERS AGREEMENT
                                  (New United)

         This Founders Agreement (New United) (this "Agreement") is entered into
as of __________ __, 2002 among Albert M Carollo, Curtis Rochelle, Gene W.
Schneider and Mark L. Schneider (each a "Founder" and collectively the
"Founders"), and each other person who has signed or who may sign this Agreement
in the future (together with the Founders each a "Stockholder" and collectively
the "Stockholders").

                                   Background

         The Stockholders are also party to a Stockholders Agreement (the
"Stockholders Agreement") entered into as of the date hereto with
UnitedGlobalCom, Inc., a Delaware corporation formerly known as New
UnitedGlobalCom, Inc. ("United"), and Liberty Media Corporation ("Liberty") and
Liberty Global, Inc. ("Liberty Global"), each a Delaware corporation.
Capitalized terms used in this Agreement without definition have the same
meanings as in the Stockholders Agreement.

         Pursuant to certain transactions described in the Agreement and Plan of
Restructuring and Merger, dated as of December 3, 2001 (the "Merger Agreement"),
among United, Liberty, Liberty Media International, Inc., Liberty Global and the
Founders et al, the Founders have acquired Beneficial Ownership of shares of the
Class B Stock.

         The Stockholders wish to set forth their agreement regarding the manner
in which they will exercise their rights under the Stockholders Agreement. The
Stockholders recognize that in the future they may have different objectives
with respect to their continued ownership of Common Stock and are entering into
this Agreement to provide a means by which they can assure stability for the
Company.

                                    Agreement

         In consideration of the foregoing premises and for other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties agree as follows:

         Section 1. Board Nominations Before Class B Event. The Stockholders
agree that prior to the occurrence of a Class B Event they shall nominate
individuals to the Board for election by the holders of Class A Stock and Class
B Stock, that such nominees will be selected as follows, and that each
Stockholder will vote for such nominees:

         (a) Each of the Founders shall be nominated as long as he wishes to be
nominated, provided the individual Founder, his Permitted Transferees identified
on the signature pages hereof and any other Permitted Transferees who have
received shares of Class B Stock from such Founder (his "Founder Group") owns at
least 30 percent of the Class B Stock owned by his Founder Group on the date of
this Agreement. If he decides not to be nominated, he may designate another
nominee so long as the nominee is reasonably qualified to serve as a director of
United.

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         (b) If a Founder dies or becomes incapacitated or if he is no longer
entitled to be nominated to the Board or to designate a nominee pursuant to
Section 2(a), the remaining Founders (the "Remaining Founders") may select a
nominee in lieu of such Founder or designee so long as the nominee is reasonably
qualified to serve as a director of the Company. In the absence of unanimous
agreement among the Remaining Founders, such nominee shall be selected by the
Founder(s) whose Founder Group(s) hold a majority of the Class B Stock then held
by all Remaining Founders and their Permitted Transferees.

         (c) Any nominees that the Founders may nominate who are not selected
pursuant to Sections 2(a) or 2(b) shall be selected by the Founder whose Founder
Group then has the most voting power in the election of directors as compared
with the other Founder Groups. A person designated to be a nominee pursuant to
Sections 2(a) or 2(b) shall be deemed reasonably qualified unless the
Stockholders, by a vote of the majority of Class B Stock owned by them,
determine otherwise.

         Section 2. Board Nominations Following Class B Event. Following the
occurrence of a Class B Event certain members of the Board may be nominated by
the Controlling Principals as provided in Section 3(b) of the Stockholders
Agreement and Section 2(a) of the Voting Agreement and the Stockholders agree
that each Stockholder will vote for each Controlling Principal Director so
nominated.

         Section 3. First Offer. If a Stockholder (the "Offering Stockholder")
intends to Transfer any Subject Shares (the "Offered Shares") except to a
Permitted Transferee, the Offering Stockholder shall promptly notify the
Founders specifying a price at which he is willing to sell the Offered Shares
("Offer Notice"). The Founders may elect to purchase all, but not less than all,
of the Offered Shares on the terms specified in the Offer Notice. If the
Founders elect to purchase the Offered Shares, they shall notify the Offering
Stockholder no later than 30 days from the date that the Offering Stockholder
notified the other Stockholders. If any Founders elect to purchase all the
Offered Shares, they shall notify the Offering Stockholder within such period
that they elect to purchase the Offered Shares, and shall purchase the Offered
Shares in any proportion that they agree, or if they cannot agree, the Offered
Shares shall be divided among the Founders in proportion to the relative
holdings of Class B Stock by the Founder Groups of the participating Founders.

         Section 4. Election Not to Purchase. If the Founders do not elect to
purchase the Offered Shares, the Offering Stockholder may Transfer them on terms
no less favorable to the Offering Stockholder than were offered to the Founders
pursuant to the Offer Notice and as permitted by, and after complying with, the
Stockholders Agreement. If he does not sell them as provided therein, he shall
comply with Section 3 of this Agreement before again offering them to anyone
except a Permitted Transferee and as provided in the Stockholders Agreement.

         Section 5. Purchase Agreement. If the Founders elect to purchase all
the Offered Shares, the parties shall promptly negotiate an appropriate purchase
agreement that shall contain representations, warranties, terms and conditions
with respect to the Offered Shares that are typical in a purchase agreement in
which the purchaser is familiar with the financial and business aspects of the
corporation whose shares are being acquired. The purchase agreement shall

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specify a closing date selected by the Founders not later than 90 days after the
original Offer Notice was deemed received.

         Section 6. Term and Termination. This Agreement shall terminate as to
any Founder and his Founder Group when he and his Founder Group own less than 10
percent of the Subject Shares owned on the date of this Agreement. This
Agreement shall terminate in its entirely upon the termination of the
Stockholders Agreement in accordance with Section 13(c) thereof.

         Section 7. Transfers.

         (a) Any Stockholder may Transfer Subject Shares to its Permitted
Transferees without being obligated to first deliver an Offer Notice to the
Founders, provided that the Permitted Transferee undertakes in writing to be
subject to each of the terms of this Agreement and is then subject to the rights
and obligations that apply to Stockholders. Any purported Transfer to a
Permitted Transferee shall be void and ineffective as against both the
transferring Stockholder and the Permitted Transferee if the Permitted
Transferee fails to become subject to this Agreement and subject to the rights
and obligations of the transferring Stockholder.

         (b) A Stockholder may pledge or grant a security interest in Subject
Shares, or Rights to acquire Subject Shares without complying with Section 3 of
this Agreement only if it complies with the requirements of Section 6 of the
Stockholders Agreement.

         Section 8. Power of Attorney. Each Stockholder hereby constitutes and
appoints the individual Founder of the Founder Group of which such Stockholder
is a part on the date such Stockholder executes this Agreement, as attorney for
him and in his name, place and stead, and in his capacity as a Stockholder or
party to this Agreement or any related agreement, to execute and file any and
all other documents, applications and consents with the Securities and Exchange
Commission and other regulatory authorities, to sign the Stockholders Agreement
and the Voting Agreement and any amendments and modifications to any and all
other documents as the attorney may consider necessary or desirable (including
without limitation, waiver of rights hereunder and thereunder), hereby giving
and granting to said attorney full power and authority to do and perform all and
every act and thing whatsoever requisite and necessary to be done in and about
the premises as fully, to all intents and purposes, as he or she might or could
do if personally present at the doing thereof, hereby ratifying and confirming
all that said attorneys may or shall lawfully do, or cause to be done, by virtue
hereof.

         Section 9. Notices. All notices, requests, demands and other
communications required or permitted under this Agreement shall be in writing,
shall be deemed to have been duly given when delivered personally or, sent by
telecopy, or recognized service providing for guaranteed delivery, addressed to
a Stockholder at the address for such Stockholder set forth on Exhibit A hereto.
All notices, requests, demands, waivers and communications shall be deemed to
have been given on the date of delivery or on the first business day after
overnight delivery was guaranteed by a recognized delivery service, except that
any change of address shall be effective only upon actual receipt. Written
notice given by telecopy shall be deemed effective when confirmation is received
by the sending party.

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         Section 10. Legend. Each Stockholder shall have a legend substantially
to the following effect placed on each certificate for Common Stock issued to
such Stockholder:

         "The securities represented by this certificate are subject to a
         Founders Agreement (NewUnited), dated as of ________ __, 2002, copies
         of which are available from UnitedGlobalCom, Inc. upon request, and any
         sale, pledge, hypothecation, transfer, assignment or other disposition
         of such securities is subject to the provisions of such Founders
         Agreement."

The Founders shall deliver to United a copy of this Agreement and any amendments
thereto so that United can comply with requests to make this Agreement and any
amendments thereto available as contemplated by such legend.

         Section 11. Remedies. Each of the parties acknowledges and agrees that
in the event of any breach of this Agreement, the nonbreaching party would be
irreparably harmed and could not be made whole by monetary damages. Accordingly,
the parties to this Agreement, in addition to any other remedy to which they may
be entitled hereunder or at law or in equity, shall be entitled to compel
specific performance of this Agreement.

         Section 12. Entire Agreement. This Agreement, together with the
Transaction Agreements, contain all the terms and conditions agreed upon by the
parties hereto, and no other agreements, oral or otherwise, regarding the
subject matter hereof shall have any effect unless in writing and executed by
the parties after the date of this Agreement. This Agreement supersedes in its
entirety the Founders' Agreement dated as of September 30, 1999, among [CERTAIN
OF] the Stockholders, which Founders' Agreement is hereby terminated.

         Section 13. Applicable Law, Jurisdiction. This Agreement shall be
governed by Colorado law without regard to conflicts of law rules. The parties
hereby irrevocably submit to the jurisdiction of any Colorado State or United
States Federal court sitting in Colorado, and only a State or Federal Court
sitting in Colorado will have any jurisdiction over any action or proceeding
arising out of or relating to this Agreement or any agreement contemplated
hereby, and the undersigned hereby irrevocably agree that all claims in respect
of such action or proceeding shall be heard and determined in such State or
Federal court.

         Section 14. Headings. The headings in this Agreement are for
convenience only and are not to be considered in interpreting this Agreement.

         Section 15. Counterpart Execution. This Agreement may be executed in
any number of counterparts, each of which shall be deemed an original but all of
which will constitute a single agreement.

         Section 16. Parties in Interest. Nothing in this Agreement, express or
implied, is intended to confer upon any Person other than the Stockholders and
their Permitted Transferees, any benefits, rights or remedies. Neither this
Agreement nor the rights or obligations of any party may be assigned or
delegated (other than to a Permitted Transferee that becomes a party hereto in

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accordance with the terms hereof) by operation of law or otherwise without the
prior written consent of all other parties hereto.

         Section 17. Severability. The invalidity or unenforceability of any
provision of this Agreement in any application shall not affect the validity or
enforceability of such provision in any other application or the validity or
enforceability of any other provision.

         Section 18. Waivers and Amendments. No waiver of any provision of this
Agreement shall be deemed a further or continuing waiver of that provision or a
waiver of any other provision of this Agreement. This Agreement may not be
amended except in a writing signed by the Stockholders, which amendment may be
made pursuant to the power of attorney granted pursuant to Section 8 hereof.

         Section 19. Interpretation. As used herein, except as otherwise
indicated herein or as the context may otherwise require, the words "include,"
"includes" and "including" are deemed to be followed by "without limitation"
whether or not they are in fact followed by such words or words of like import;
the words "hereof," "herein," "hereunder" and comparable terms refer to the
entirety of this Agreement, and not to any particular section or other
subdivision hereof; any pronoun shall include the corresponding masculine,
feminine and neuter forms; the singular includes the plural and vice versa;
references to "Section" or another subdivision are to a section or subdivision
hereof; and all references to "the date hereof," "the date of this Agreement" or
similar terms (but excluding references to the date of execution hereof) refer
to the date first above written, notwithstanding that the parties may have
executed this Agreement on a later date. Any reference herein to a "day" or
number of "days" (without the explicit qualification of "Business") shall be
deemed to refer to a calendar day or number of calendar days. If any action or
notice is to be taken or given on or by a particular calendar day, and such
calendar day is not a Business Day, then such action or notice may be taken or
given on the next succeeding Business Day.

                            [Signature pages follow]

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         Executed as of the date first set forth above.

                             THE G. SCHNEIDER GROUP

Dated:
       ---------------------                ------------------------------------
                                            Gene W. Schneider

                                            G. SCHNEIDER HOLDINGS, CO.,
                                            a Colorado limited partnership


Dated:                                  By:
       ---------------------                ------------------------------------
                                            Gene W. Schneider
                                            General Partner


                                        THE GENE W. SCHNEIDER FAMILY TRUST


Dated:                                  By:
       ---------------------                ------------------------------------
                                            Tina M. Schneider Wildes
                                            Trustee


Dated:                                  By:
       ---------------------                ------------------------------------
                                            Carla G. Shankle
                                            Trustee


Dated:                                  By:
       ---------------------                ------------------------------------
                                            W. Dean Salter
                                            Trustee

                                        MLS Family Partnership LLLP


                                        By: The Nicole Schneider Trust
                                            General Partner


Dated:                                  By:
       ---------------------                ------------------------------------
                                            Gene W. Schneider
                                            Trustee


Dated:                                  By:
       ---------------------                ------------------------------------
                                            John F. Riordan
                                            Trustee

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                             THE M. SCHNEIDER GROUP


Dated:
       ---------------------                ------------------------------------
                                            Mark L. Schneider


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                               THE ROCHELLE GROUP


                                        ROCHELLE LIMITED PARTNERSHIP


                                        By:  Curtis Rochelle Trust
                                             General Partner


Dated:                                       By:
       ---------------------                     ---------------------------
                                                 Curtis W. Rochelle
                                                 Trustee


                                        MARIAN H. ROCHELLE REVOCABLE TRUST


Dated:                                  By:
       ---------------------                --------------------------------
                                            Marian H. Rochelle
                                            Trustee


Dated:
       ---------------------            ------------------------------------
                                        Curtis W. Rochelle


Dated:                                  *
       ---------------------            ------------------------------------
                                        Marian H. Rochelle


Dated:                                  *
       ---------------------            ------------------------------------
                                        Jim Rochelle


Dated:                                  *
       ---------------------            ------------------------------------
                                        April Brimmer Kunz


Dated:                                  *
       ---------------------            ------------------------------------
                                        Kathleen Jaure


* by Curtis W. Rochelle Attorney-in-Fact


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                                THE CAROLLO GROUP



Dated:
       ---------------------            ----------------------------------------
                                        Albert M. Carollo


                                        CAROLLO COMPANY,
                                        a Wyoming general partnership


Dated:                                  By:
       ---------------------                ------------------------------------
                                            Albert M. Carollo
                                            General Partner


                                        ALBERT & CAROLYN COMPANY,
                                        a Wyoming trust


Dated:                                  By: *
       ---------------------                ------------------------------------
                                            Albert M. Carollo, Jr.
                                            Trustee


                                        JAMES R. CAROLLO LIVING TRUST
                                        a Wyoming trust


Dated:                                  By: *
       ---------------------                ------------------------------------
                                            James R. Carollo
                                            Trustee


                                        JOHN B. CAROLLO LIVING TRUST
                                        a Wyoming trust


Dated:                                  By: *
       ---------------------                ------------------------------------
                                            John B. Carollo
                                            Trustee


* by Albert M. Carollo Attorney-in-Fact

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