You could create a registry setting that sets it to demo mode and increment a value in another key every time they run the program - allow for a maximum number of uses instead of by date. When they install a full version change the demo to live and in the future if the value is live then don't check the increment number. Still not foolproof unless you encrypt it so a smart user can't find the key and change it to 0 again. They couldn't reinstall the demo mode because in the install you can check for the prior existence of the demo/live key.


>Gotcha, but then the user could just change the system date and defeat me
> :-). That would make the effort pointless.
>
>Isn't there another way ?
>
>I think I'll restrict my table sizes, and only give them access to a few of the reports in the demo version. Enough to allow the user to see the system but not enough to be useful in a production mode.
>
>Any ideas on the install key?
>
>Thanks Again,
>Greg