you get banned on engine when it comes to valve games. they all use the source engine, meaning if you get banned from CSS, you get banned from DODS , HL2, TF2 etc. too. I have an account on which I got banned on CSS and instantly got banned on all the other games too. If you get banned on MW2 you can still use the other VAC-Secured games (valve's games). Dunno if the engine ban counts for MW2 and BO too, as BO uses a modified WAW engine, which is basically a IW engine, which is basically a Doom engine). Bit of confusion there, but there might be some people dumb enough not to consider this, and rage by saying I got banned on BO and now I can't play mw2 anymore? Money back! This way we'll find out what to choose, a new acc or put it on the same one.