You tried SuSe 10.0 ? Try Gentoo's live Cd first then install it.
I think u must try latest distibution of any Linux flavour which
will be having support for the mother board you mentioned. May
be Mandriva 2006. Mandriva 2006 supports almost everything.
Or try Slackware too. There are many distro's. Slackware's latest
release is 10.2 May be that could help you. Next week i am going
to try Mandriva and Suse 10.0 on the same motherboard at my friends
computer.
Regards,
Amey Abhyankar.