Now what did I screw up...
I've got Windows set to 640 x 480, made sure that mame.ini had the settings listed earlier, and then ran avres. In avres, I picked the following options: single screen, 60 hz only, proportional, horizontal, and stretch interlace.
Now when I run Puckman or 1942 via the command line Mame, the top and bottom of the white box that surrounds the initial disclaimer/game info screen is off the top and bottom of the screen. Shrinking the height of the screen via the monitor controls doesn't bring it back. How do I fix that?
Thanks!