My site? Free? I think I'm lost sorry.
The page I was referring to there shows how to hide the drives in My Computer, but I'm not affiliated at all.
Another reason I suggested this (I'm not sure if it works the same), when this option is used through Group Policies on Windows Server 2003, it stops you browsing the drives, not just hiding the icons in that one window.
If you don't mind me asking, what is the scenario? Maybe that would help to assess your needs from such a tool. Who will be using the machine? What do they need access to?
For Example: My work has 'Internet Booths' where all you can do is use the Internet, not giving you access to any other applications or data on the machine. There is a few software products around to do this.