Looks like the only* motherboards I have left are an ASRock K7S41 and an ASUS K8N-E.
*Possibly have another Syntax SV266 somewhere. I used one in the last Win98 system I built and I was planning on buying a spare but I can't remember if I actually did or not.
As far as graphics cards go, I think all I have is an 9200SE and S3 Savage 2000 and I can't find the 9200.