hmmm thanks.   I've had a new development..  Yes, I'm using a PC monitor.  It's an LCD screen.  When I play certain games, like Altered Beast for example, my monitor gives me a warning:
"Out of Range
Warning
Pixel Rate is Over limit.
Horizontal: something
Vertical: something"
I can't get rid of it.  Might this have something to do with the problem?
Also, this problem is especially weird since it didn't happen a week ago.  Well kinda... it would happen when I would use binary Mame with MameWah, but it wouldnt happen when I would use MAME32 with MameWah.  The games were perfectly centered in the screen with MAME32.  Now no matter what I use as the emulator, the screen is always off.  
I doubt you can help much more, but I figured I'd give as much detail to help out in future development.  
Thanks!