Ok, so I installed W7 and it seems I'll have to DL WoW from the beginning, since it won't accept the disc instalation >.> Might be away for a while.
D:
I Hope it goes for you

I had the same problem. But i copied mine from a friends comp.
Anyways, Good luck to ya.
I upgraded to Win7 and forgot to copy my WoW folder across... So now I need to do a full install. And that will probably blow my net. :\