Yep, windows xp sp3. The PC is a 2.4ghz p4 with 1gb. I'm using mame 0.84 because the romset was only £10 from a rom burner, the full set of newer mames is too expensive for the person I am doing it for and neither of us want to download something that huge, he's only really interested in stuff that runs well on 84 anyway.
I have set up mala on his machine but it's not as nice or fast as AM, scrolling through the lists is really slow and it doesn't hide the OS as well (cmd windows pop up and all that). It does show the titles and not the rom names though!