my school has deep freeze, I would have to re-install everything every everytimg. recently though I discovered the joy of using SNES9x and saving it to the drive they reserved for me, SNES 9x requires no configuration with windows, you cna even run it off a jump drive or a CD(be prepared for very unstable gaming if playing it off the CD though)
we can install almost any game i believe but half life 2, unreal tournement, SOuldier of Fortune, and theres a few more
We're actually allowed to make viruses and test them out as long as we tell the school and they isolate the computer, lol. I don't know what we have at my school but my teacher let us play the URT2004 demo last year (we had over half the class playing LAN). Eventually people did it when they weren't sposed to (school logged it) and we got in trouble, my teacher had to go around after that making sure everyone finished their work before playing games. I know that he has control over our computers now, last year he kept messing with my mouse when I was working in visual basic, and then he kept getting my friend killed at "defend the castle" because he'd mess up his mouse, lol. BTW, is addictinggames.com blocked? They've got good stuff there
the quake 3 demo should work we played taht in our skewl and we also had novell....i think steam should work aswell so css cs will work to (yes we played that to)
they blocked most of the game sites at my school, so me and my friends installed various games on our iPods and just run the .exe for the game off of there! i got Halo and Star Wars Battlefront working, so i'm happy!