Changed my xbox 360 resolution now screen is black...?

I upped my resolution on my 360 (am using vga input to my insignia 22 inch tv) and it was working completely fine unitl i tried upping the next resolution then my tv went black and says it cant support that input, ive tried the whole reset ur xbox thing a million times as well as the hold the "y" and... show more I upped my resolution on my 360 (am using vga input to my insignia 22 inch tv) and it was working completely fine unitl i tried upping the next resolution then my tv went black and says it cant support that input, ive tried the whole reset ur xbox thing a million times as well as the hold the "y" and right trigger thing but nothing seems to work. the only option i appear to have left is to do it "blind" in you know what i mean, so my question is some could someone tell me how many times to press up or over on the d-pad to get to this setting and change to a lower resolution since i cant physically see my screen? lots of detail please, im completely blind haha, thanks.
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