If though you uninsall IE from Windows. It's still there, it's still practically buil into the OS.....
All the need to do is go into My Computer and type a address in, and it turns itself into IE.
We use a program called "Fortress 101"
Best program I've ever seen for Windows Clien Security.
You can stop anything and everyhing, allow certain things to run. Can actually do basic webpage filtering....restricts users from doing anything like modified files....
We have it here so they can't write anything to the computer, has to be their network drive.....apart from temp and things....
Very good program, wasn't that expensive either....as far as those packages go's....
Depending on the size of the network your running.