Invoice

   Please mail the completed form to:     Shareable Software International
                                          PO Box 59102
   708-397-1221 (Voice)                   Schaumburg, IL 60159
   708-397-0381 (Fax)                     800-622-2793 (Orders Only)
   215-623-6203 (BBS, Join Conference 77)

   Where did you get your evaluation copy?

   We ship first class/air mail.
          Shipping name/address: ___________________________________
          (Please print clearly)
                                 ___________________________________

                                 ___________________________________

   Disk size: ____ 5.25 inch     ____ 3.5  inch

        (See: What You Get on Registration [next page] for details.)
   ___  Single-user registrations at $25 each..................$__________
          (Disk & manual)
   ___  Multiple registrations (Disk & manual sets)............$__________
          1 -  2  copies .................... Single-user price
          3 -  5  copies .................... $22 each
          6 - 10  copies .................... $19 each
         11 - 15  copies .................... $15 each
              15+ copies .................... $12 each
   ___  Site-License (Master disk & manual you copy)...........$__________
          1 - 20  users ..................... $10 each
         21 - 50  users ..................... $ 8 each
         51 - 99  users ..................... $ 6 each
             100+ users ..................... $ 5 each
        Subtotal for merchandise...............................$__________
        Shipments to Illinois addresses require sales tax......$__________
        Shipping and handling charge (North America)...........$___4.00___
        Outside North America, please add extra $4.00 shipping.$__________
        Purchase order processing fee ($10)....................$__________

        Total..................................................$__________
        (Payments by check must be made in U.S. funds using a check payable
         on a U.S. bank, made out to SSI. Purchase orders are accepted from
         schools, businesses, and government agencies. Please add a $10
         processing fee. MasterCard/Visa accepted, fill out authorization.)

   I authorize SSI to charge software, tax, shipping and handling charges,
   and other fees on this order form to the below-indicated credit card.
   Check card type:
                   [ ] Mastercard
                   [ ] Visa     Card Number: ______________________________
                               (Please print clearly)
   _______________________________   Expiration date: ______________
        Authorized signature                            Month/Year




   License and Invoice

   Computer Knowledge products are distributed as Shareware. Our US and
   Canadian agent for shareware sales is Shareable Software International.

   Basically, if you have not obtained your copy of this program directly
   from Computer Knowledge or SSI, you have an evaluation copy. If you find
   the program to be useful (you learned something) then you have an
   obligation to pay for a license.

   What You Get on Registration

   The software version of DOS Summary you presently have is complete in
   all respects. When you register you will receive:

      - A new disk (this assures you have the most up-to-date version).
      - A manual consisting of printed copies of the information screens
          in this program plus additional command examples not in
          shareware or registered DOS Summary software screens.
      - A copy of the Qualitas program ASQ that Computer Knowledge has
          permission to redistribute to our registered users. ASQ
          examines your computer and provides useful information about
          how memory is being used and allows you to identify potential
          equipment conflicts. (Note: ASQ is distributed by Qualitas as
          $0 Shareware and may be found on a number of bulletin board
          systems around the world.)
      - A selection of evaluation disk(s) published by Shareable
          Software International (number and contents of these disks
          varies and may be replaced with a catalog and discounts).

   Single-user and multiple-user registrations provide the above for each
   registration at prices indicated on the invoice.

   A site-license registration is also available for volume users who can
   duplicate the disk(s) and documentation at their site. A single master
   disk and manual is provided for the fee indicated on the invoice.


                              Shareware
                               equals
                      Try before Buy Marketing