MFC Client Error (NO HACK!)

Hey, I am getting this error "Client MFC Application has encountered a problem and needs to close". It's been doing this for a day. I was playing earlier, and I logged out so I could get my spin on the Wheel of prizes, and when I tried to log back in, it would load up fine, then when I clicked a server (Alpha, Bravo, Charlie) this error would come up, I've tried re-installing and that didn't work, restarting...Nope. Disabling and pretty much doing everything everyone said to do didn't work. PLEASE HELP!
Specs: Windows XP SP3 32bit
2.8 gHz Processor
4 gigs of ram
Shitty graphics card (Game has never had a problem running because of graphics card)
THANKS IN ADVANCED!