As of this morning this pc is running a 128 and a 256 dimms. I was just playing games that would freeze the thing up before and it worked great. I also installed a Jaton 3D Force B-32 plus AGP vid card today and now have 32 bit color on this old pile of junk. As near as I can tell this is basicaly the same card as a NVIDIA RIVA TNT2 M64 card.
I did some searching and found a few super 7 boards with 3 dimm slots. I hear the FIC PA 2013 is a good one.
The old Biostar M5ALA v.2 board that came in this PC originaly had 3 dimm slots, but like I said I had 3 of those boards die in a 4 years so I gave up on them. I have a Jmark J-542C because a local computer place had it laying around for a couple years and he gave me a real deal on it, brand new in the box for $30.
Its not a full ATX size so I had to mod the case a little to make it fit.