i found a substitute for the 4500gma look up on kexts.com for the driver under intel video cards downloads etc., 4500mhd kexts __ apple 3100 fb . there is two drivers to download, dont get the 4500, this will help u achieve 720p res. at 512mb ram, not the full capability of the graphics card but better than 800 x 600 res

Please...would you can post the link for us??? (|For the others users), but if this kext only gave us a native resolution, this is im was get a long time before....tks in advanced for information....