InfoWorld releases a free tool so that you can check your system's Windows 7 compatibility
>> Find out if your PC can run Windows 7
Windows 7 is coming. Will your PC be ready? InfoWorld's Windows 7 compatibility calculator, a feature in the free Windows Sentinel PC monitoring tool, will tell you. Note that we've based our Windows 7 compatibility calculator on the October 2008 prerelease version of Windows 7.
>> Find out if your PC can run Windows 7