Well, unfortunately, installing programs may have been disabled for your account and since most anonymous browsing tools make changes to your browser in slight ways, like adding an extra menu item, etc. they may not install without administrator rights. I am yet to come across a program that allows a limited user to install it, but if I do come across one, I will let you know. Bypassing administrator software restriction policies without permission isn't particularly safe or correct. If this works, continue to use it. Why complicate things further, plus this way you dont really leave much of a trace or do anything that will get you into trouble.
