Ive tried reading all the faq, articles, searched posts etc but havent been able to find an answer so Im hoping someone can help!?

my setup as a nvidia graphics card in (geforce 8800 gt), so If my understanding is right I should use the Cuda miner with that. However when I try to use one, it wont start (literally the button doesn't change), however if I use the CL miner, it'll start!?

Does anybody know what I might be doing wrong for the cuda miner, any help would be greatly appreciated?

Hey, really busy forum!!!