thanks - yes - guessed that was the way to do it but was so annoyed at the cheesy tactics that i was not thinking straight!!
A lot of cheese isn't actually all that powerful, but relies on the shock/annoyance/rage of it happening and that the opponent has never seen it before. I almost always lose to a cheese the first time it happens against me, but generally after thinking about it for a bit (or looking on Teamliquid.net if I can't think of anything), I'll normally never lose to it again. There are some cheeses that are just plain strong though which take scouting, practice and good play to do well against.