I agree with what Rohit's said, if you have an issue with cheating, you should be bringing it up with your co-ordinator or teacher or whoever is responsible, it doesn't really help when you come on here and have a whine about something that we really can't even help you with.
The truth is, let those who decide to cheat cheat, they will some day pay the price for their actions, if you do bad things, bad things will come upon you.
Either way, just because they know the questions, doesn't mean they'll end up doing well. What I've usually seen is that those who ask other students for questions on the SAC are students who are pretty much not up to date with the subject anyway, meaning they're no real threat to those who really know their stuff, surely someone of your level, Bazza, shouldn't really be bothered by any of those prideless cheats.