Radeon 9500 series and -resolution command

[TOK]

Has anyone with a newish Radeon used the MAME -resolution toggle with odd resolutions?

I posted about this in the software forum too, but I'm having an issue with Powerstrip crashing MaLa when the little "tool tips" come up. You can't shut them off in the trial version of Powerstrip.
I'm hoping to just stop using Powerstrip and use the -resolution toggle in MAME to force my display to 640x432. Its an odd size, but I understand it works well for using a TV with component input.

I've already verified the TV will display 640x400 using Powerstrip. I'm just not certain if it can be as easy as it sounds by just selecting my desired resolution in MAME. I don't really care how the Windows desktop displays. This is a vertical machine that boots right into MaLa and I do most of my changes on it over a regular PC on my network.

[TOK]

Just a follow up here to say this worked fine with the Radeon. Don't need Powerstrip at all. Tried my custom resolution at the command line successfully, then manually entered it into the Custom Resolution section of MaLa and it works great.