protect my DLL from being copied

i have a .net program that use a certain DLL that is located in the system32 folder
i need to allow the users to use this machine and run the application, but i need to protect my DLL from being copied,
i can use win xp or win 2003.
and i can create admin account and guests account...
but what are the processes that i need to do in order to prevent people from copying my DLL?
thanks and hope that this is doable with windows
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Rich RumbleSecurity SamuraiCommented:
Since you have to give them read access, it can be copied in a number of ways. They can open it in notepad and paste it into an email, or just copy it an paste it into an email or what have you. You may have a look at this utility for windows 2003 SP1
You may be able to hide if from them, but allow the app to see it still...

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
mte01Author Commented:

This would do the trick..thanks for your help!
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
OS Security

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.