>>>The capacity of memory sticks and such is growing everyday. They make it very easy for a user to copy entire files off the network and walk off with them.
>>>
>>>Is there anyway to prevent this?
>>>
>>>Assume that the user needs read/write access when they use the application.
>>>
>>>This would be a different way to express the question:
>>>
>>>Can I specify that only one program has read/write access to the files unless the user has sufficiently high rights? (I still need to copy the files from time to time.)
>>>
>>>Ummm... Two programs (system backup program, etc.)
>>>
>>>Peter
>>
>>Have a look at Cryptor from XiTech: http://www.xitech-europe.co.uk
>>
>>I have been playing with this recently and it is quite a neat and seamless solution to protecting your tables.
>
>Did you buy it or is there a demo version available?

Hi Denis. There is a demo version to try. It's very straight forward, you encode your file with a choice of several encrytion options. Then inside your app you load and tell cryptor to "monitor" for access requests to the encoded file(s). Whenever your app access' the file for read or write purposes Cryptor encodes/decodes the data to/from the file(s) without further change in your app. I have tested under W98, W2K, and WXP and no problem so far.