If you could post the model number for your laptop that would be great. Also, if you the chipset that is running the system, that'd help too. There are about 7 possible chipsets that I can think of off hand that it could be, but without the model number of the laptop it'd be hard to find any info on it.
BTW, if you don't know the chipset you can grab Intels Chipset Identification Tool from
HERE. After you run it, and get the chipset number, head to
THIS page, and follow the link to the page regarding the chipset you are running. On those pages you will either see "Get latest graphics driver" if the product is still current (ie. 945/915/910 chipsets), or "Get Final Grahics Driver" if it's an older one (ie. 855/830/815/810).