I'm running Mamewah and regular Mame on my machine. Most of my games fill the screen when running (especially the old ones--Pacman, Galaga, etc., but also Uo Poko, the Bubble Bobbles and some others play full screen), but some only fill up about 1/4 of the screen--centered. I've tried fiddling with the various controls in the .ini, but can't get them to display full screen (the cocktail version of tetris was the one I worked on quite a bit). I've got a WG U3100. I'm running on an old Compaq Deskpro PIIII, 1Gz. It's only got the built in Intel video--I'm not that familiar with PCs. I bought an ATI Rage card, but it won't plug into my computer -- not even sure if that's the video driver's the problem.
Any assistanace would be greatly appreciated.