Exhibit 10.18  


EXHIBIT A  


REGISTRATION RIGHTS AGREEMENT  


        This Registration Rights Agreement (this "Agreement") is made and entered into as of March 30, 2004, by and
among Sento Corporation, a Utah corporation (the "Company"), and the purchasers signatory hereto (each such purchaser, a
"Purchaser" and collectively, the "Purchasers"). 


        This
Agreement is made pursuant to the Securities Purchase Agreement, dated as of the date hereof among the Company and the Purchasers (the "Purchase
Agreement"). 


        The
Company and the Purchasers hereby agree as follows: 


        1.    Definitions.    Capitalized terms used and not otherwise defined herein that are defined in the Purchase
Agreement shall have the meanings given such terms in the Purchase Agreement. As used in this Agreement, the following terms shall have the following meanings: 



        "Advice" shall have the meaning set forth in Section 6(d). 



        "Effectiveness Date" means, with respect to the Registration Statement required to be filed hereunder, the earlier of (a) the
45th calendar day following the earlier of (i) the actual Filing Date or (ii) the required Filing Date (if subject to a "full review" by the Commission then, the
75th calendar day following the earlier of (i) the actual Filing Date or (ii) the required Filing Date), and (b) the fifth Trading Day following the date on which
the Company is notified by the Commission that the Registration Statement will not be reviewed or is no longer subject to further review and comments. 



        "Effectiveness Period" shall have the meaning set forth in Section 2(a). 


        "Event" shall have the meaning set forth in Section 2(b). 


        "Event Date" shall have the meaning set forth in Section 2(b). 


        "Filing Date" means, with respect to the Registration Statement required to be filed hereunder, the May 31, 2004 (provided the
Company will use its best efforts to file before such date). 


        "Holder" or "Holders" means the holder or holders, as the case may be, from time to time
of Registrable Securities. 


        "Indemnified Party" shall have the meaning set forth in Section 5(c). 


        "Indemnifying Party" shall have the meaning set forth in Section 5(c). 


        "Losses" shall have the meaning set forth in Section 5(a). 



        "Proceeding" means an action, claim, suit, investigation or proceeding (including, without limitation, an investigation or partial
proceeding, such as a deposition), whether commenced or threatened. 


        "Prospectus" means the prospectus included in the Registration Statement (including, without limitation, a prospectus that includes any
information previously omitted from a prospectus filed as part of an effective registration statement in reliance upon Rule 430A promulgated under the Securities Act), as amended or
supplemented by any prospectus supplement, with respect to the terms of the offering of any portion of the Registrable Securities covered by the Registration Statement, and all other amendments and
supplements to the Prospectus, including post-effective 



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amendments,
and all material incorporated by reference or deemed to be incorporated by reference in such Prospectus. 


        "Registrable Securities" means all of the Shares and the Warrant Shares, together with any shares of Common Stock issued or issuable upon
any stock split, dividend or other distribution, recapitalization or similar event with respect to the foregoing. 


        "Registration Statement" means the registration statements required to be filed hereunder, including (in each case) the Prospectus,
amendments and supplements to the registration statement or Prospectus, including pre- and post-effective amendments, all exhibits thereto, and all material incorporated by
reference or deemed to be incorporated by reference in the registration statement. 



        "Rule 415" means Rule 415 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended from
time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose and effect as such Rule. 


        "Rule 424" means Rule 424 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended from
time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose and effect as such Rule. 




        2.    Registration.    



        (a)   On
or prior to the Filing Date, the Company shall prepare and file with the Commission the Registration Statement covering the resale of all of the Registrable
Securities for an offering to be made on a continuous basis pursuant to Rule 415. The Registration Statement required hereunder shall be on Form S-3 (except if the Company is
not then eligible to register for resale the Registrable Securities on Form S-3, in which case the Registration shall be on another appropriate form in accordance herewith). The
Registration Statement required hereunder shall contain (except if otherwise directed by the Holders) substantially the "Plan of Distribution" attached
hereto as Annex A. Subject to the terms of this Agreement, the Company shall use its best efforts to cause the
Registration Statement to be declared effective under the Securities Act as promptly as possible after the filing thereof, but in any event not later than the Effectiveness Date, and shall use its
best efforts to keep the Registration Statement continuously effective under the Securities Act until the date when all Registrable Securities covered by the Registration Statement have been sold or
may be sold without volume restrictions pursuant to Rule 144(k) as determined by the counsel to the Company pursuant to a written opinion letter to such effect, addressed and acceptable to the
Company's transfer agent and the affected Holders (the "Effectiveness Period"). 


        (b)   If:
(i) a Registration Statement is not filed on or prior to the Filing Date (if the Company files a Registration Statement without affording the Holder the
opportunity to review and comment on the same as required by Section 3(a), the Company shall not be deemed to have satisfied this clause (i)), or (ii) the Company fails to file
with the Commission a request for acceleration in accordance with Rule 461 promulgated under the Securities Act, within five Trading Days of the date that the Company is notified (orally or in
writing, whichever is earlier) by the Commission that a Registration Statement will not be "reviewed," or is not subject to further review, or (iii) prior to the date when such Registration
Statement is first declared effective by the Commission, the Company fails to file a pre-effective amendment and otherwise respond in writing to comments made by the Commission in respect
of such Registration Statement within 20 calendar days after the receipt of comments by or notice from the Commission that such amendment is required in order for a Registration Statement to be
declared effective, or (iv) a Registration Statement filed or required to be filed hereunder is not declared effective by the Commission on or before the Effectiveness Date, or (v) after
a Registration Statement is first declared effective by the Commission, it ceases for any reason to remain continuously effective as 



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to
all Registrable Securities for which it is required to be effective, or the Holders are not permitted to utilize the Prospectus therein to resell such Registrable Securities, for in any such case
20 calendar consecutive days but no more than an aggregate of 25 calendar days during any 12 month period (which need not be consecutive Trading Days) (any such failure or breach being referred
to as an "Event," and for purposes of clause (i) or (iv) the date on which such Event occurs, or for purposes of clause (ii) the date on
which such five Trading Day period is exceeded, or for purposes of clause (iii) the date which such 20 calendar days is exceeded, or for purposes of clause (v) the date on which such 20
or 25 calendar day period, as applicable, is exceeded being referred to as "Event Date"), then in addition to any other rights the Holders may have
hereunder or under applicable law: (x) on each such Event Date the Company shall pay to each Holder an amount in cash, as partial liquidated damages and not as a penalty, equal to 1.0% of the
aggregate purchase price paid by such Holder pursuant to the Purchase Agreement for any Registrable Securities then held by such Holder; and (y) on each monthly anniversary of each such Event
Date (if the applicable Event shall not have been cured by such date) until the applicable Event is cured, the Company shall pay to each Holder an amount in cash, as partial liquidated damages and not
as a penalty, equal to 1.0% of the aggregate purchase price paid by such Holder pursuant to the Purchase Agreement for any Registrable Securities then held by such Holder. If the Company fails to pay
any partial liquidated damages pursuant to this Section in full within seven days after the date payable, the Company will pay interest thereon at a rate of 15% per annum (or such lesser maximum
amount that is permitted to be paid by applicable law) to the Holder, accruing daily from the date such partial liquidated damages are due until such amounts, plus all such interest thereon, are paid
in full. The partial liquidated damages pursuant to the terms hereof shall apply on a daily pro-rata basis for any portion of a month prior to the cure of an Event. 




        3.    Registration Procedures    


        In
connection with the Company's registration obligations hereunder, the Company shall: 



        (a)   Not
less than five Trading Days prior to the filing of the Registration Statement or any related Prospectus or any amendment or supplement thereto, the Company shall,
(i) furnish to the Holders copies of all such documents proposed to be filed (including documents incorporated or deemed incorporated by reference to the extent requested by such Person) which
documents will be subject to the review of such Holders, and (ii) cause its officers and directors, counsel and independent certified public accountants to respond to such inquiries as shall be
necessary, in the reasonable opinion of respective counsel to conduct a reasonable investigation within the meaning of the Securities Act. The Company shall not file the Registration Statement or any
such Prospectus or any amendments or supplements thereto to which the Holders of a majority of the Registrable Securities shall reasonably object in good faith, provided that the Company is notified
of such objection in writing no later than 5 Trading Days after the Holders have been so furnished copies of such documents. 


        (b)   (i) Prepare
and file with the Commission such amendments, including post-effective amendments, to the Registration Statement and the Prospectus used
in connection therewith as may be necessary to keep the Registration Statement continuously effective as to the applicable Registrable Securities for the Effectiveness Period and prepare and file with
the Commission such additional Registration Statements as may be necessary in order to register for resale under the Securities Act all of the Registrable Securities; (ii) cause the related
Prospectus to be amended or supplemented by any required Prospectus supplement, and as so supplemented or amended to be filed pursuant to Rule 424; (iii) respond as promptly as
reasonably possible to any comments received from the Commission with respect to the Registration Statement or any amendment thereto and, as promptly as reasonably possible, upon request, provide the
Holders true and complete copies of all correspondence from and to the Commission relating to the Registration Statement; and (iv) comply in all material respects with the provisions of the
Securities Act and 



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the
Exchange Act with respect to the disposition of all Registrable Securities covered by the Registration Statement during the applicable period in accordance with the intended methods of disposition
by the Holders thereof set forth in the Registration Statement as so amended or in such Prospectus as so supplemented. 



        (c)   Notify
the Holders of Registrable Securities to be sold as promptly as reasonably possible and (if requested by any such Person) confirm such notice in writing promptly
following the day (i)(A) when a Prospectus or any Prospectus supplement or post-effective amendment to the Registration Statement is proposed to be filed; (B) when the
Commission notifies the Company whether there will be a "review" of the Registration Statement and whenever the Commission comments in writing on the Registration Statement (the Company shall upon
request provide true and complete
copies thereof and all written responses thereto to each of the Holders); and (C) with respect to the Registration Statement or any post-effective amendment, when the same has
become effective; (ii) of any request by the Commission or any other Federal or state governmental authority during the period of effectiveness of the Registration Statement for amendments or
supplements to the Registration Statement or Prospectus or for additional information; (iii) of the issuance by the Commission or any other federal or state governmental authority of any stop
order suspending the effectiveness of the Registration Statement covering any or all of the Registrable Securities or the initiation of any Proceedings for that purpose; (iv) of the receipt by
the Company of any notification with respect to the suspension of the qualification or exemption from qualification of any of the Registrable Securities for sale in any jurisdiction, or the initiation
or threatening of any Proceeding for such purpose; and (v) of the occurrence of any event or passage of time that makes the financial statements included in the Registration Statement
ineligible for inclusion therein or any statement made in the Registration Statement or Prospectus or any document incorporated or deemed to be incorporated therein by reference untrue in any material
respect or that requires any revisions to the Registration Statement, Prospectus or other documents so that, in the case of the Registration Statement or the Prospectus, as the case may be, it will
not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under
which they were made, not misleading. 


        (d)   Use
commercially reasonable efforts to avoid the issuance of, or, if issued, obtain the withdrawal of (i) any order suspending the effectiveness of the
Registration Statement, or (ii) any suspension of the qualification (or exemption from qualification) of any of the Registrable Securities for sale in any jurisdiction, at the earliest
practicable moment. 


        (e)   Furnish
to each Holder, without charge, at least one conformed copy of the Registration Statement and each amendment thereto, including financial statements and
schedules, all documents incorporated or deemed to be incorporated therein by reference to the extent requested by such Person, and all exhibits to the extent requested by such Person (including those
previously furnished or incorporated by reference) promptly after the filing of such documents with the Commission. 



        (f)    Promptly
deliver to each Holder, without charge, as many copies of the Prospectus or Prospectuses (including each form of prospectus) and each amendment or supplement
thereto as such Persons may reasonably request in connection with resales by the Holder of Registrable Securities. Subject to the terms of this Agreement, the Company hereby consents to the use of
such Prospectus and each amendment or supplement thereto by each of the selling Holders in connection with the offering and sale of the Registrable Securities covered by such Prospectus and any
amendment or supplement thereto, except after the giving on any notice pursuant to Section 3(c). 



        (g)   Prior
to any resale of Registrable Securities by a Holder, use its commercially reasonable efforts to register or qualify or cooperate with the selling Holders in
connection with the 



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registration
or qualification (or exemption from the Registration or qualification) of such Registrable Securities for the resale by the Holder under the securities or Blue Sky laws of such
jurisdictions within the United States as any Holder reasonably requests in writing, to keep the Registration or qualification (or exemption therefrom) effective during the Effectiveness Period and to
do any and all other acts or things reasonably necessary to enable the disposition in such jurisdictions of the Registrable Securities covered by the Registration Statement;  provided, that the Company
shall not be required to qualify generally to do business in any jurisdiction where it is not then so qualified, subject the
Company to any material tax in any such jurisdiction where it is not then so subject or file a general consent to service of process in any such jurisdiction. 


        (h)   If
requested by the Holders, cooperate with the Holders to facilitate the timely preparation and delivery of certificates representing Registrable Securities to be
delivered to a transferee pursuant to the Registration Statement, which certificates shall be free, to the extent permitted by the Purchase Agreement, of all restrictive legends, and to enable such
Registrable Securities to be in such denominations and registered in such names as any such Holders may request. 


        (i)    Upon
the occurrence of any event contemplated by Section 3(c)(v), as promptly as reasonably possible, prepare a supplement or amendment, including a
post-effective amendment, to the Registration Statement or a supplement to the related Prospectus or any document incorporated or deemed to be incorporated therein by reference, and file
any other required document so that, as thereafter delivered, neither the Registration Statement nor such Prospectus will contain an untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading. If the Company notifies the Holders in
accordance with clauses (ii) through (v) of Section 3(c) above to suspend the use of any Prospectus until the requisite changes to such Prospectus have been made, then the Holders shall
suspend use of such Prospectus. The Company will use its best efforts to ensure that the use of the Prospectus may be resumed as promptly as is practicable. The Company shall be entitled to exercise
its right under this Section 3(i) to suspend the availability of a Registration Statement and Prospectus, subject to the payment of liquidated damages pursuant to Section 2(b), for a
period not to exceed 60 days (which need not be consecutive days) in any 12 month period. 


        (j)    Comply
with all applicable rules and regulations of the Commission. 


        (k)   The
Company may require each selling Holder to furnish to the Company a certified statement as to the number of shares of Common Stock beneficially owned by such Holder
and, if required by the Commission, the person thereof that has voting and dispositive control over the Shares. During any periods that the Company is unable to meet its obligations hereunder with
respect to the registration of the Registrable Securities solely because any Holder fails to furnish such information within three
Trading Days of the Company's request, any liquidated damages that are accruing at such time as to such Holder only shall be tolled and any Event that may otherwise occur solely because of such delay
shall be suspended as to such Holder only, until such information is delivered to the Company. 




        4.    Registration Expenses.    All fees and expenses incident to the performance of or compliance with this Agreement
by the Company shall be borne by the Company whether or not any Registrable Securities are sold pursuant to the Registration Statement. The fees and expenses referred to in the foregoing sentence
shall include, without limitation, (i) all registration and filing fees (including, without limitation, fees and expenses (A) with respect to filings required to be made with the
Principal Market on which the Common Stock is then listed for trading, and (B) in compliance with applicable state securities or Blue Sky laws), (ii) printing expenses (including,
without limitation, expenses of printing certificates for Registrable Securities and of printing prospectuses if the printing of prospectuses is reasonably requested by the holders of a majority of
the Registrable Securities included 


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in
the Registration Statement), (iii) messenger, telephone and delivery expenses, (iv) fees and disbursements of counsel for the Company, (v) Securities Act liability insurance,
if the Company so desires such insurance, and (vi) fees and expenses of all other Persons retained by the Company in connection with the consummation of the transactions contemplated by this
Agreement. In addition, the Company shall be responsible for all of its internal expenses incurred in connection with the consummation of the transactions contemplated by this Agreement (including,
without limitation, all salaries and expenses of its officers and employees performing legal or accounting duties), the expense of any annual audit and the fees and expenses incurred in connection
with the listing of the Registrable Securities on any securities exchange as required hereunder. In no event shall the Company be responsible for any broker or similar commissions or, except to the
extent provided for in the Transaction Documents, any legal fees or other costs of the Holders. 


        5.    Indemnification    



        (a)    Indemnification by the Company.    The Company shall, notwithstanding any termination of this Agreement,
indemnify and hold harmless each Holder, the officers, directors, agents and employees of each of them, each Person who controls any such Holder (within the meaning of Section 15 of the
Securities Act or Section 20 of the Exchange Act) and the officers, directors, agents and employees of each such controlling Person, to the fullest extent permitted by applicable law, from and
against any and all losses, claims, damages, liabilities, costs (including, without limitation, reasonable attorneys' fees) and expenses (collectively,
"Losses"), as incurred, arising out of or relating to any untrue or alleged untrue statement of a material fact contained in the Registration Statement,
any Prospectus or any form of prospectus or in any amendment or supplement thereto or in any preliminary prospectus, or arising out of or relating to any omission or alleged omission of a material
fact required to be stated therein or necessary to make the statements therein (in the case of any Prospectus or form of prospectus or supplement thereto, in light of the circumstances under which
they were made) not misleading, except to the extent, but only to the extent, that (i) such untrue statements or omissions are based solely upon information regarding such Holder furnished in
writing to the Company by such Holder expressly for use therein, or to the extent that such information relates to such Holder or such Holder's proposed method of distribution of Registrable
Securities and was reviewed and expressly
approved in writing by such Holder expressly for use in the Registration Statement, such Prospectus or such form of Prospectus or in any amendment or supplement thereto (it being understood that the
Holder has approved Annex A hereto for this purpose) or (ii) in the case of an occurrence of an event of the type specified in Section 3(c)(ii)-(v), the use by such Holder of an outdated
or defective Prospectus after the Company has notified such Holder in writing that the Prospectus is outdated or defective and prior to the receipt by such Holder of the Advice contemplated in
Section 6(d). The Company shall notify the Holders promptly of the institution, threat or assertion of any Proceeding of which the Company is aware in connection with the transactions
contemplated by this Agreement. 


        (b)    Indemnification by Holders.    Each Holder shall, severally and not jointly, indemnify and hold harmless the
Company, its directors, officers, agents and employees, each Person who controls the Company (within the meaning of Section 15 of the Securities Act and Section 20 of the Exchange Act),
and the directors, officers, agents or employees of such controlling Persons, to the fullest extent permitted by applicable law, from and against all Losses, as incurred, to the extent arising out of
or based solely upon: (x) such Holder's failure to comply with the prospectus delivery requirements of the Securities Act or (y) any untrue or alleged untrue statement of a material fact
contained in any Registration Statement, any Prospectus, or any form of prospectus, or in any amendment or supplement thereto or in any preliminary prospectus, or arising out of or relating to any
omission or alleged omission of a material fact required to be stated therein or necessary to make the statements therein not misleading (i) to the extent, but only to the extent, that such
untrue statement or omission is contained in any information so furnished in writing by 



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such
Holder to the Company specifically for inclusion in the Registration Statement or such Prospectus or (ii) to the extent that (1) such untrue statements or omissions are based solely
upon information regarding such Holder furnished in writing to the Company by such Holder expressly for use therein, or to the extent that such information relates to such Holder or such Holder's
proposed method of distribution of Registrable Securities and was reviewed and expressly approved in writing by such Holder expressly for use in the Registration Statement (it being understood that
the Holder has approved Annex A hereto for this purpose), such Prospectus or such form of Prospectus or in any amendment or supplement thereto or (2) in the case of an occurrence of an event of
the type specified in Section 3(c)(ii)-(v), the use by such Holder of an outdated or defective Prospectus after the Company has notified such Holder in writing that the Prospectus is outdated
or defective and prior to the receipt by such Holder of the Advice contemplated in Section 6(d). In no event shall the liability of any selling Holder hereunder be greater in amount than the
dollar amount of the net proceeds received by such Holder upon the sale of the Registrable Securities giving rise to such indemnification obligation. 



        (c)    Conduct of Indemnification Proceedings.    If any Proceeding shall be brought or asserted against any Person
entitled to indemnity hereunder (an "Indemnified Party"), such Indemnified Party shall promptly notify the Person from whom indemnity is sought (the
"Indemnifying Party") in writing, and the Indemnifying Party shall have the right to assume the defense thereof, including the employment of counsel
reasonably satisfactory to the Indemnified Party and the payment of all fees and expenses incurred in connection with defense thereof; provided, that the failure of any Indemnified Party to give such
notice shall not relieve the Indemnifying Party of its obligations or liabilities pursuant to this Agreement, except (and only) to the extent that it shall be finally determined by a court of
competent jurisdiction (which determination is not subject to appeal or further review) that such failure shall have prejudiced the Indemnifying Party. 


        An
Indemnified Party shall have the right to employ separate counsel in any such Proceeding and to participate in the defense thereof, but the fees and expenses of such counsel shall be
at the expense of such Indemnified Party or Parties unless: (1) the Indemnifying Party has agreed in writing to pay such fees and expenses; (2) the Indemnifying Party shall have failed
promptly to assume the defense of such Proceeding and to employ counsel reasonably satisfactory to such Indemnified Party in any such Proceeding; or (3) the named parties to any such Proceeding
(including any impleaded parties) include both such Indemnified Party and the Indemnifying Party, and such Indemnified Party shall reasonably believe that a material conflict of interest is likely to
exist if the same counsel were to represent such Indemnified Party and the Indemnifying Party (in which case, if such Indemnified Party notifies the Indemnifying Party in writing that it elects to
employ separate counsel at the expense of the Indemnifying Party, the Indemnifying Party shall not have the right to assume the defense thereof and the reasonable fees and expenses of one separate
counsel shall be at the expense of the Indemnifying Party). The Indemnifying Party shall not be liable for any settlement of any such Proceeding effected without its written consent, which consent
shall not be unreasonably withheld. No Indemnifying Party shall, without the prior written consent of the Indemnified Party, effect any settlement of any pending Proceeding in respect of which any
Indemnified Party is a party, unless such settlement includes an unconditional release of such Indemnified Party from all liability on claims that are the subject matter of such Proceeding. 


        Subject
to the terms of this Agreement, all reasonable fees and expenses of the Indemnified Party (including reasonable fees and expenses to the extent incurred in connection with
investigating or preparing to defend such Proceeding in a manner not inconsistent with this Section) shall be paid to the Indemnified Party, as incurred, within ten Trading Days of written notice
thereof to the Indemnifying Party; provided, that the Indemnified Party shall promptly reimburse the Indemnifying Party for that portion of such fees and expenses applicable to such actions for which
such Indemnified Party is not entitled to indemnification hereunder, determined based upon the relative faults of the parties. 



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        (d)    Contribution.    If a claim for indemnification under Section 5(a) or 5(b) is unavailable to an
Indemnified Party (by reason of public policy or otherwise), then each Indemnifying Party, in lieu of indemnifying such Indemnified Party, shall contribute to the amount paid or payable by such
Indemnified Party as a result of such Losses, in such proportion as is appropriate to reflect the relative fault of the Indemnifying Party and Indemnified Party in connection with the actions,
statements or omissions that resulted in such Losses as well as any other relevant equitable considerations. The relative fault of such Indemnifying Party and Indemnified Party shall be determined by
reference to, among other things, whether any action in question, including any untrue or alleged untrue statement of a material fact or omission or alleged omission of a material fact, has been taken
or made by, or relates to information supplied by, such Indemnifying Party or Indemnified Party, and the parties' relative intent, knowledge, access to information and opportunity to correct or
prevent such action, statement or omission. The amount paid or payable by a party as a result of any Losses shall be deemed to include, subject to the limitations set forth in this Agreement, any
reasonable attorneys' or other reasonable fees or expenses incurred by such party in connection with any Proceeding to the
extent such party would have been indemnified for such fees or expenses if the indemnification provided for in this Section was available to such party in accordance with its terms. 


        The
parties hereto agree that it would not be just and equitable if contribution pursuant to this Section 5(d) were determined by pro rata allocation or by any other method of
allocation that does not take into account the equitable considerations referred to in the immediately preceding paragraph. Notwithstanding the provisions of this Section 5(d), no Holder shall
be required to contribute, in the aggregate, any amount in excess of the amount by which the proceeds actually received by such Holder from the sale of the Registrable Securities subject to the
Proceeding exceeds the amount of any damages that such Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission, except in the
case of fraud by such Holder. 


        The
indemnity and contribution agreements contained in this Section are in addition to any liability that the Indemnifying Parties may have to the Indemnified Parties. 




        6.    Miscellaneous    



        (a)    Remedies.    In the event of a breach by the Company or by a Holder, of any of their obligations under this
Agreement, each Holder or the Company, as the case may be, in addition to being entitled to exercise all rights granted by law and under this Agreement, including recovery of damages, will be entitled
to specific performance of its rights under this Agreement. The Company and each Holder agree that monetary damages would not provide adequate compensation for any losses incurred by reason of a
breach by it of any of the provisions of this Agreement and hereby further agrees that, in the event of any action for specific performance in respect of such breach, it shall waive the defense that a
remedy at law would be adequate. 


        (b)    No Piggyback on Registrations.    Except as set forth on Schedule 6(b)  attached hereto, neither the Company nor any of
its security holders (other than the Holders in such capacity pursuant hereto) may include securities of the Company in a
Registration Statement other than the Registrable Securities. No Person has any right to cause the Company to effect the registration under the Securities Act of any securities of the Company. The
Company shall not file any other registration statement until after the Effective Date. 



        (c)    Compliance.    Each Holder covenants and agrees that it will comply with the prospectus delivery requirements
of the Securities Act as applicable to it in connection with sales of Registrable Securities pursuant to the Registration Statement. 



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        (d)    Discontinued Disposition.    Each Holder agrees by its acquisition of such Registrable Securities that, upon
receipt of a notice from the Company of the occurrence of any event of the kind described in Section 3(c), such Holder will forthwith discontinue disposition of such Registrable Securities
under the Registration Statement until such Holder's receipt of the copies of the supplemented Prospectus and/or amended Registration Statement or until it is advised in writing (the
"Advice") by the Company that the use of the applicable Prospectus may be resumed, and, in either case, has received copies of any additional or
supplemental filings that are incorporated or deemed to be incorporated by reference in such Prospectus or Registration Statement. The Company will use its best efforts to ensure that the use of the
Prospectus may be resumed as promptly as it practicable. The Company agrees and acknowledges that any periods during which the Holder is required to discontinue the disposition of the Registrable
Securities hereunder shall be subject to the provisions of Section 2(b). 



        (e)    Piggy-Back Registrations.    If at any time during the Effectiveness Period there is not an
effective Registration Statement covering all of the Registrable Securities and the Company shall determine to prepare and file with the Commission a registration statement relating to an offering for
its own account or the account of others under the Securities Act of any of its equity securities, other than on Form S-4 or Form S-8 (each as promulgated under
the Securities Act) or their then equivalents relating to equity securities to be issued solely in connection with any acquisition of any entity or business or equity securities issuable in connection
with the stock option or other employee benefit plans, then the Company shall send to each Holder a written notice of such determination and, if within fifteen days after the date of such notice, any
such Holder shall so request in writing, the Company shall include in such registration statement all or any part of such Registrable Securities such Holder requests to be registered, subject to
customary underwriter cutbacks applicable to all holders of registration rights. 


        (f)    Amendments and Waivers.    The provisions of this Agreement, including the provisions of this sentence, may not
be amended, modified or supplemented, and waivers or consents to departures from the provisions hereof may not be given, unless the same shall be in writing and signed by the Company and each Holder
of the then outstanding Registrable Securities. 


        (g)    Notices.    Any and all notices or other communications or deliveries required or permitted to be provided
hereunder shall be made in accordance with the provisions of the Purchase Agreement. 


        (h)    Successors and Assigns.    This Agreement shall inure to the benefit of and be binding upon the successors and
permitted assigns of each of the parties and shall inure to the benefit of each Holder. Each Holder may assign their respective rights hereunder in the manner and to the Persons as permitted under the
Purchase Agreement. 


        (i)    Execution and Counterparts.    This Agreement may be executed in any number of counterparts, each of which when
so executed shall be deemed to be an original and, all of which taken together shall constitute one and the same Agreement. In the event that any signature is delivered by facsimile transmission, such
signature shall create a valid binding obligation of the party executing (or on whose behalf such signature is executed) the same with the same force and effect as if such facsimile signature were the
original thereof. 


        (j)    Governing Law.    All questions concerning the construction, validity, enforcement and interpretation of this
Agreement shall be determined with the provisions of the Purchase Agreement. 


        (k)    Cumulative Remedies.    The remedies provided herein are cumulative and not exclusive of any remedies provided
by law. 



9







 




        (l)    Severability.    If any term, provision, covenant or restriction of this Agreement is held by a court of
competent jurisdiction to be invalid, illegal, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions set forth herein shall remain in full force and effect and
shall in no way be affected, impaired or invalidated, and the parties hereto shall use their commercially reasonable efforts to find and employ an alternative means to achieve the same or
substantially the same result as that contemplated by such term, provision, covenant or restriction. It is hereby stipulated and declared to be the intention of the parties that they would have
executed the remaining terms, provisions, covenants and restrictions without including any of such that may be hereafter declared invalid, illegal, void or unenforceable. 


        (m)    Headings.    The headings in this Agreement are for convenience of reference only and shall not limit or
otherwise affect the meaning hereof. 


        (n)    Independent Nature of Purchasers' Obligations and Rights.    The obligations of each Holder hereunder are
several and not joint with the obligations of any other Holder hereunder, and no Holder shall be responsible in any way for the performance of the obligations of any other Holder hereunder. Nothing
contained herein or in any other agreement or document delivered at any closing, and no action taken by any Holder pursuant hereto or thereto, shall be deemed to constitute the Holders as a
partnership, an association, a joint venture or any other kind of entity, or create a presumption that the Holders are in any way acting in concert with respect to such obligations or the transactions
contemplated by this Agreement. Each Holder shall be entitled to protect and enforce its rights, including without limitation the rights arising out of this Agreement, and it shall not be necessary
for any other Holder to be joined as an additional party in any proceeding for such purpose. 



************************* 


10







 

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



	 	 	SENTO CORPORATION
	

 	
 	

By:	
 	


	 	 	 	 	Name:
	 	 	 	 	Title:





[SIGNATURE PAGE OF HOLDERS FOLLOWS] 


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[PURCHASER'S SIGNATURE PAGE TO SNTO RRA] 


Name
of Investing Entity:
                                         
       
 Signature of Authorized Signatory of Investing entity:
                                         
       

Name of Authorized Signatory:
                                         
       

Title of Authorized Signatory:
                                         
        


[SIGNATURE
PAGES CONTINUE] 


12







 
[PURCHASER'S SIGNATURE PAGE TO SNTO RRA] 


Name
of Investing Entity:
                                         
       
 Signature of Authorized Signatory of Investing entity:
                                         
       

Name of Authorized Signatory:
                                         
       

Title of Authorized Signatory:
                                         
        


[SIGNATURE
PAGES CONTINUE] 


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ANNEX A  


Plan of Distribution  


        The Selling Stockholders (the "Selling Stockholders") of the common stock ("Common
Stock") of Sento Corporation (the "Company") and any of their pledgees, assignees and
successors-in-interest may, from time to time, sell any or all of their shares of Common Stock on any stock exchange, market or trading facility on which the shares are traded
or in private transactions. These sales may be at fixed or negotiated prices. The Selling Stockholders may use any one or more of the following methods when selling shares: 



	•
	ordinary
brokerage transactions and transactions in which the broker-dealer solicits purchasers;



	•
	block
trades in which the broker-dealer will attempt to sell the shares as agent but may position and resell a portion of the block as principal to facilitate the
transaction;



	•
	purchases
by a broker-dealer as principal and resale by the broker-dealer for its account;



	•
	an
exchange distribution in accordance with the rules of the applicable exchange;



	•
	privately
negotiated transactions;



	•
	settlement
of short sales;



	•
	broker-dealers
may agree with the Selling Stockholders to sell a specified number of such shares at a stipulated price per share;



	•
	a
combination of any such methods of sale;



	•
	through
the writing or settlement of options or other hedging transactions, whether through an options exchange or otherwise; or



	•
	any
other method permitted pursuant to applicable law. 






        The
Selling Stockholders may also sell shares under Rule 144 under the Securities Act of 1933, as amended (the "Securities Act"),
if available, rather than under this prospectus. 


        Broker-dealers
engaged by the Selling Stockholders may arrange for other brokers-dealers to participate in sales. Broker-dealers may receive commissions or discounts from the Selling
Stockholders (or, if any broker-dealer acts as agent for the purchaser of shares, from the purchaser) in amounts to be negotiated. Each Selling Stockholder does not expect these commissions and
discounts relating to its sales of shares to exceed what is customary in the types of transactions involved. 



        In
connection with the sale of our common stock or interests therein, the Selling Stockholders may enter into hedging transactions with broker-dealers or other financial institutions,
which may in turn engage in short sales of the common stock in the course of hedging the positions they assume. The Selling Stockholders may also sell shares of our common stock short and deliver
these securities to close out their short positions, or loan or pledge the common stock to broker-dealers that in turn may sell these securities. The Selling Stockholders may also enter into option or
other transactions with broker-dealers or other financial institutions or the creation of one or more derivative securities which require the delivery to such broker-dealer or other financial
institution of shares offered by this prospectus, which shares such broker-dealer or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such
transaction). 


        The
Selling Stockholders and any broker-dealers or agents that are involved in selling the shares may be deemed to be "underwriters" within the meaning of the Securities Act in
connection with such sales. In such event, any commissions received by such broker-dealers or agents and any profit on the resale of the shares purchased by them may be deemed to be underwriting
commissions or discounts under the Securities Act. Each Selling Stockholder has informed the Company that it does not have 


14







 



any
agreement or understanding, directly or indirectly, with any person to distribute the Common Stock. 


        The
Company is required to pay certain fees and expenses incurred by the Company incident to the registration of the shares. The Company has agreed to indemnify the Selling Stockholders
against certain losses, claims, damages and liabilities, including liabilities under the Securities Act. 



        Because
Selling Stockholders may be deemed to be "underwriters" within the meaning of the Securities Act, they will be subject to the prospectus delivery requirements of the Securities
Act. In addition, any securities covered by this prospectus which qualify for sale pursuant to Rule 144 under the Securities Act may be sold under Rule 144 rather than under this
prospectus. Each Selling Stockholder has advised us that they have not entered into any agreements, understandings or arrangements with any underwriter or broker-dealer regarding the sale of the
resale shares. There is no underwriter or
coordinating broker acting in connection with the proposed sale of the resale shares by the Selling Stockholders. 



        We
agreed to keep this prospectus effective until the earlier of (i) the date on which the shares may be resold by the Selling Stockholders without registration and without regard
to any volume limitations by reason of Rule 144(e) under the Securities Act or any other rule of similar effect or (ii) all of the shares have been sold pursuant to the prospectus or
Rule 144 under the Securities Act or any other rule of similar effect. The resale shares will be sold only through registered or licensed brokers or dealers if required under applicable state
securities laws. In addition, in certain states, the resale shares may not be sold unless they have been registered or qualified for sale in the applicable state or an exemption from the registration
or qualification requirement is available and is complied with. 


        Under
applicable rules and regulations under the Exchange Act, any person engaged in the distribution of the resale shares may not simultaneously engage in market making activities with
respect to our common stock for a period of two business days prior to the commencement of the distribution. In addition, the Selling Stockholders will be subject to applicable provisions of the
Exchange Act and the rules and regulations thereunder, including Regulation M, which may limit the timing of purchases and sales of shares of our common stock by the Selling Stockholders or any
other person. We will make copies of this prospectus available to the Selling Stockholders and have informed them of the need to deliver a copy of this prospectus to each purchaser at or prior to the
time of the sale. 


15







 
Schedule 6(b)  


Sento Corporation

Securities with Registration Rights  



	 
	 	Shares/

Issuable

Shares
	 	 

	Debentures *	 	279,463	 	 
	Shares from warrant exercises:	 	 	 	 
	Cashless	 	18,928	 	 
	Fleming	 	2,500	 	 
	SVB	 	47,655	 	 
	Warrants outstanding:	 	 	 	(Strike Price)

	 	RCG	 	7,500	 	8.48
	 	RCG (April 02 issuance)	 	7,500	 	8.48
	 	1999 Private Placement	 	94,688	 	10.00
	 	Shareholder Relations	 	20,000	 	2.70
	 	Bud Walker	 	37,500	 	1.60
	 	Bud Walker	 	12,500	 	2.25
	 	Debenture Warrants	 	213,000	 	2.25
	 	Teitelbaum Warrants	 	15,000	 	3.00
	 	 	
	 	 
	 	 	756,234	 	 
	 	 	
	 	 






	*
	Excludes
debentures that were under rule 144 that have already been converted (Bathgate's group) 


16