Ah, I see what you mean. However, was able to get the roms to load full screen now. Not really sure how I did it, but it works each time. Now my only issue is the speed of my computer as some games are laggy. Luckily, there aren't too many N64 titles I plan on playing on the arcade.
On a side note, what Mame runs well with Maximus? I can hardly get any games to launch, yet they launch outside of Maximus (of course not all, but most). I have downloaded a couple versions already with not much luck. I did notice all my games were in .rar format, but they do show up in the game list, so not sure why they aren't running. Thoughts?