AFAIK, only option is Advancemame. There are many compatible video cards listed. It is possible to do this in windows using Powerstrip, but I've had mixed results with Powerstrip so far.
I'm setting up a standard res monitor using DOS Advancemame and a Nvidia Riva TNT/2, which seems to be working pretty well so far.
Now if only I could get my sound card to work in DOS
I'd be glad to point you in the right direction if you decide to go this route. My initial advice is that you should be comfortable working in DOS.