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April 23, 1999



Mr. Arthur F. Coombs
22 North Wind River Lane
Linden, UT  84042

Dear Art:

On behalf of the Board of Directors of Sento Corporation, I am pleased to
confirm your position as President and Chief Executive Officer of Sento
Corporation, effective April 23, 1999.

Outlined below is a summary of the compensation plan for your position, and a
description of your stock options.

COMPENSATION

We feel that the opportunity is significant and that the compensation should
be commensurately meaningful. We are, therefore, offering you an annual base
salary of $120,000.00. You will also be eligible for an executive bonus to be
determined in 30 days. You will be employed as an "at-will" employee and your
compensation will be based upon the period of your employment with Sento. You
will not be separately compensated for your service as a director of Sento.

If your employment with Sento is terminated by Sento's Board of Directors for
any reason other than for "cause" (as defined below) or as a direct result of
a "change in control" (as defined below), you will receive a severance
payment equal to 12 months' salary, based on your salary at the time of
termination. "Cause" means any dishonest act that has a material adverse
effect on Sento, any conviction for a felony offense or any willful disregard
for the instructions of Sento's Board of Directors which has a material
adverse effect on Sento. "Change in Control" means any sale of all or
substantially all of Sento's assets or the acquisition by any party of shares
of Sento's common stock which results in such party owning more than 50% of
the outstanding shares of Sento's common stock, but only if such sale or
acquisition results in the termination of your employment, a substantial and
material reduction in your responsibilities or the relocation of your
permanent residence to a location that is more than 50 miles from Sento's
current office.

The note payable to Sento Corporation in the amount of $110,000 (included as
part of your drafted employment agreement) is hereby forgiven, and you need
not repay it. In addition, Sento will compensate you an additional amount
sufficient to cover federal and state income taxes, computed on your
incremental tax rate. Such forgiveness of debt is ordinary income to you and
will be reported on form 1099 or on your W-2. You will be responsible for
including such income in your personal income tax return for the year ended
December 31, 1999.

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OWNERSHIP

It is our desire that our relationship be long-term. We would like to provide
you with a meaningful reward for your successes and incentive to help us
continue to grow. We are prepared to provide you an option to purchase
400,000 shares of Sento with an exercise price of $1.75. This option will
vest over three years. These options will vest 1/36 per month.

PREVIOUS AGREEMENTS, WRITTEN OR ORAL, WITH SENTO

In a Board Meeting held July 8, 1998 the Board of Directors offered you an
option to purchase 400,000 shares in connection with an employment agreement
with Sento. However, you and Sento management were never able to reach
agreement on the employment agreement, and as a result no option agreement
was ever issued, and you were an "at will employee" of Sento. In addition
there were other oral and written agreements between you and Sento which were
never finalized and therefore never became effective. By signing this letter,
you and we both agree that all former agreements written or oral, have no
current effectiveness and are null and void.

CONCLUSION

Given the unique skills you will bring to Sento, much of what we have offered
you is exceptional in nature and has the potential to negatively impact the
motivation of our other employees. We, therefore, ask that you will hold all
details of your compensation program in the strictest confidence.

It is an exciting opportunity to welcome you as a the President and Chief
Executive Officer of Sento and as member of our Board of Directors and hope
that our association will be a very long, valuable, and rewarding one. Please
sign below as an indication of acceptance for the above position and
conditions of employment.

Please let me know if there are any issues that I have not addressed to your
satisfaction, or if you have any other questions.

Sincerely,

Kieth Sorenson                                /s/ Arthur F. Coombs
Chairman of the Board of Directors         -------------------------------
Sento Corporation                                 Arthur F.  Coombs