How to Configure to a High Resolution -Alliance AT25 to a Paperwhite VGA

Hi susers, I set it up using xf86config its working but the resolution is on 640x480 and i disable the virtual screen at the XF86Config file, but it doesn't fit the screen. Can you help me guys how to configure properly. I am using suse 7.0 iso regards, -- Jonathan J. Terbio = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =