I tried using
this site to calculate timings for 640x480, 800x600, and 1024x768. I was not successfull, as all were out of range for the LCD. I will revert my drivers later today and use powerstrip to measure timings in workig scenarios and try to get multiple working settings posted.
I am hoping that somebody more knowledgable will drop in with some pointers on some of the more obscure vga timings like front porch, back porch, H/V sync and H/V blank..
Check back for my post tonight for results from powerstrip.