Intel IG are not able to run some of the graphics routines used by GW. You may experience problems loading into, and/or getting stuck in, certain areas. There was a sticky on here about it, so a search should turn up some info.
Basically, if it's a desktop (not a laptop) and it has a PCIe graphics card slot, your best thing would be to buy a video card. Almost any newer model card, such as an AMD HD5450, would do.
Last edited by Quaker; May 03, 2011 at 02:05 PM // 14:05..