Not that I know of, other than specifying what driver to use. (I myself have a i900 (82801) graphics chip, but use the i810 driver; it has some
issues [verizon.net], but I would expect that you should be alright.) But if you're building a xorg.conf file from scratch, I'd recommend trying to use the xorgconfig program first; it makes the configuration process a lot simpler (like just asking what resolution and refresh rate you use, to determine vertical sync). As far as recommendations go, I just put my own xorg.conf file
online [verizon.net]; it's for a 15" LCD at 1024x768 and 75Hz. But again, the specs come directly from my documentation, so they probably won't optimally apply to your display.