Keep Your Computer Up-To-Date!

For vista users:

There's no need to go to any specific website or worry about selecting the right driver software to download. You can make your computer do that for you

1) Start menu
2) Control Panel
3) Device Manager
4) Open up Display Adapter in the device manager (you should see the name of your graphics drivers)
5) right click on the specific name of your graphics drivers (there's usually only 1 option)
6) Select "update driver software"
7) Select the top option "Search automatically for updated driver software"

If you have Windows Update on, this is done automatically for you. Though I don't think it is effective. You should always check the website of the chip provider for the most up-to-date drivers.

Example, the computer I am on now has a ATI Radeon HD 3440 (driver v8.6x on September 29th, 2009), Windows is telling me "Windows has determined the driver software for your device is up to date." but the ATI website says new drivers (v8.7x came out on February 17th, 2010)