So, you’ve set up that fancy new computer lab where your youth group can hang out, have LAN parties, do their homework, etc. You’ve imaged every machine for easy backup and you’re ready to roll. However, in the first two weeks you find yourself reimaging every machine multiple times because of spyware, malware, etc. What do you do next.

Sandboxie is basically a wrapper around any application (used mostly for web browsers) that allows the wrapped application to read from the hard drive, but when it writes to the hard drive it actually writes to a file maintained by the sandboxie application. When you close the browser, any data that was “written” to the hard drive (the sandboxie maintained file) is actually deleted. This keeps you from accidentally getting spyware, malware and other uglies on your computer.
It makes browsing slightly more difficult because for example if you wanted to actually save a file (video, mp3, etc) you have to jump through a couple of hoops to tell sandboxie to save the file, but I think the effort is worth the added security.
Read the getting started guide for more information.