Got my new compy on Wed. night. I-7 920 asusp6x58d prem. 6gb ddr3 1600mhz kingston 2-gtx 295 SLI 1000 psu in a series 1 Raven case. Windows 7 64 bit home premium OS. Installed cod 4 and played all night on multiplayer. Now cod 4 will work in single player mode, but not multiplayer mode. I tried running it in xp compatible modes, but no luck. I"m not using a router, I have the firewall set to allow cod 4 on everything, norton is set to allow all for cod 4. It tells me that " iw3mp.exe has failed" Ideas?