You need Nvidia nForce 430 drivers.
To get them for XP, click HEREAlthough the one description says they are for Vista, the actual information breakdown shows they are for XP.
Ok, I downloaded it and windows said its not compatible with xp or something like that..It said it might effect my cpu either now or in the future. So of course i downloaded it anyway.and everything was working find.no more mare over sm bus controller any more..But when I logged off and tried to get back on for some reason my cpu couldnt connect to the internet anymore...I had to restore my cpu to an earlier date just to be able to write you..I think it was the program, I need to find one for XP...any clues on where to find one?? and thank you for your help.