> I also have a Sentinel software dev pack to look into......

Definately worth a look at.. I played with one of their hardware keys for a
while- and their software
comes in flavours from simple encapsulation for a full blown dev pack with
library calls etc.. depends how
un crackable you want to make it.. They're not inexpensive though :)

Time limits that I have written have just used an ini file with a time stamp
encrypted with a key generated from something
like the users name or business name. Then at least its not readable by the
eye - or very easy to change - theres no hard coded
key in the exe file for someone to dig out..

Really depends how un crackable you want it to be. I have found recently
that vmWare virtual machines are quite useful in extending the length I can
use time limited software- so really nothing is going to be perfect.

--
Jon Baker

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