I used the Windows 7 Upgrade Advisor thing and I got this message: "Your current graphics adapter won't support the Windows Aero user interface. If you want to experience the benefits of Windows Aero, contact your PC manufacturer or retailer to see if an upgrade is available." I checked Aero's requirement and it looks like my graphics card has all of them. Is this a glitch or something? If someone knows whats going on help would be appreciated. Thanks!
My notebook has a 8600 Nvidia gpu and it runs aero with no issues. Try updating your gpu drivers. http://www.nvidia.com/Download/index.aspx?lang=en-us