Okay, I think I mostly have this sorted out now. I deleted my etire mame directory and started from scratch. Put a fresh install of ADVMAME 0.96 on, tried to run it, won't process the rom list. Hmmmmmmm. Drop a copy of DosMAME in to the directory with it and volia! it works! So it looks like the problem all along was my ADVMAME installation. Too bad I managed to trash my working ADVMAME.RC file in the process. Take one step forward, take one step back. *lol*