How to block a program from being run

...or not, password protect your account. What is wrong with pressing a few keys....at the beginning....if you are going to do that anyway when using your computer ?

Windows doesn't have that kind of security features... No operating system does, that I know of.

Your best defense here is a password. HOWEVER... I have to wonder how your dislike for iTunes factors in here. Just because it's on the system doesn't mean you have to use it. If you don't like it taking over file associations, do the install yourself, and stop it from associating itself with any file types. Then forget the program exists, and let your friend be happy with their new iPod.

Go to the properties for the ITunes exe click on the security tab and remove the users from the groups and users list all but the admin. If she is just a user the program will not run. But everyone is right you should have a password on your account since your the admin user otherwise they'll just logon as you. This is the whole reason for NTFS you can do file level security. Then for some reason if you wanted to run it as a user level you would right click on the shortcut and click on RUN AS a window will popup and you type in your ID and Password and bingo the program will run for that time.

Hope this helps
Mark