help on X config

Hi i am having some trouble trying to get X to run on my suse 7.1 i have an ATI Rage Xpert 128 and the montior is an philips 109S montior but it seems no matter what ettings i have try it never runs the X-server the screen stays black after i try it wonder if omeone could maybe tell me what settings i need to put in to get thi to run with this hardware thanks in advancce Bob