Craig,

        Before you decide to use some software/hardware copy protection scheme,
check it out http://www.fravia.org.
        There's a lot of information on what you can do to "hard" the reverse
enginnering.

Ricardo Seixas


>Does anyone know how to add software copy protection in DOS and/or Windows?
>
>Thanks,
>
>Craig
>
>P.S. Thanks to all who suggested low-priced LCD sources, I am still
>following a number of leads...
>
>