Thanks SGT, it turns out the button was f12 in mame, and i had already made a tonne of screenshots!
But Mala still doesn't display them!

I made sure the snaps folder was setup to the proper place, but no go still...
May be a vista issue... I am getting the bugs worked out for my Mame projects, but I am testing with my Vista desktop (which more than a few front ends don't even want to think about working with)
The final install will be on systems powered by Tinyxp, stripped way down... I have one of the systems up and running (but not in a cab yet) so i guess phase 2 is testing front ends on that, so it will perform similar to my final system