my problem is, I want to create a new folder and make it impossible (or reasonably hard) for the user to change its name or to delete it. The thing is, the user must be able to access the files contained within that folder and change them in any way he pleases. Using the examples I've been finding in the net all I get is making it impossible to change the files INSIDE the folder, and not the folder itself.
Thanks in advance ;)
As long as that folder is created by the user's account (assuming that you're creating the folder programmatically by your application), the user will be able to edit the folder. The best way to protect that folder from tampering would be to write a very small windows service that keeps that folder always open, thus preventing deletion/renaming.