I think I have that Vid card in my last gen PC at home. I recall having alot of trouble with the drivers for it, since its not officially supported by ATI and none of their drivers will work with it.
I'll check my MB when I get a chance, but its almost not worth replacing a MB for it. The only reason to get that card, is because you have a system thats stuck with an AGP MP. If you have to replace the MB, its almost defeating the point.