Collectible Card Game Headquarters

I installed MWS in my computer (running windows 7) and downloaded all the .full pics, but mws don't recognize them, i'm think i'm not having any stupid error because i always used pics when running windows xp and didn't have any problems. So I wanna know if there is any known error for windows 7 64 bits.

I would try not to only download them, but also to unzip them into the right folder