Kevin,
Thank you for your reply. I am happy to hear that you have not had to worry about users decompiling your apps.
The main reason I am so paranoid about this is the fact that it is so easy to decompile a .NET app.
I acctually did post a message here on UT asking if someone else was paranoid regarding this, but nobody replied. It was message#961806
The link refered to in that message is http://www.aisto.com/roeder/dotnet/
Here you can download a great .NET decompiler. It wan even decompile and find out what your variables were named. I guess that is just a trade-off that we must be willing to accept in return for a highly structured language and managed code.

Einar
>Hey, Einar,
>
>Admittedly, I haven't been in situations where that was an issue (I guess I've been lucky! users I've worked with know better) - but obviously many people have to deal with this.
>
>Most of the apps I've been involved with were administered in such a way that users weren't permitted to touch the software area.
>
>Admittedly my knowledge of this topic is pretty limited, so your best bet is to do searches on this site and other sites for more information on best ways to protect an app...and/or maybe someone else with more knowledge of securing an app can jump in.
>
>Kevin