What kind of Intel Chip would that be? If it's a GMA9xx series I don't think it even supports AA in the first place. Otherwise, often you can find settings like these when you right-click on your desktop and go to the properties. In my case, running an ATi videochip, there's also the "Catalyst Control Center" where I can set these kind of things. Perhaps Intel also has its own control center? You may also need to go to the Windows Control Panel to find these videochip specific settings.