Running game off a flash drive?

[Dordolekk]

I wasn't sure where to post this, but here goes.

Is it possible to run the game off a flash drive? My predicament. I'm stuck at school for a long time in between classes on Tuesday and Thursday and as such, I'd like to load up some P99 and play while I'm here in the lab. I copied the entire game folder over to my flash drive, but I'm not sure where to go from there, if I can go anywhere.

Techies help meh!