I finally got round to setting up my new Groovymame PC using Chunksin's disk image and instructions, and it worked a treat! Thanks very much.
I am having a slight issue with AM slowing down whilst cycling through games with video snaps though, anyone have any ideas why this might be? It only seems to happen after I have gone into a game and come back out into the menu again. Before that, it works no problem.
I'm running Win7 with a core i5-3470 @3.2 GHz, 8GB RAM and a HD 7450. I'm thinking it must be something to do with the way attract mode handles video files or something. Everything else works fine, Mame is great, even modern bullet hell shooters and 3D fighting games like Soul Calibur work with no slowdown. I can switch to images only on the menu, but it would be nice to have the videos.