Need help resetting all video settings

I have a macbook with a broken display but the DVI out works, unfortunately it's set to PAL and the TV I have it hooked up to is flickering so bad I can't see the selections to set it back to NTSC...
Is there a way to reset all video setting back to factory by key commands? I've tried resetting the PRAM and the NVRAM without any luck.
Any Ideas?

One thing you could try is starting in Safe mode, but I am not sure if that will work or not using a TV through the Apple Mini DVI to Video Adapter (which I assume you are using).
http://docs.info.apple.com/article.html?artnum=107393

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