Microsoft again releases the Windows Update Advisor. The tool tests if the system and the peripherals are ready for Windows 7.
Windows 7 Upgrade Advisor
Microsoft provides a tool for all the Windows Vista users to ensure a seamless update to Windows 7. Currently the Windows 7 Upgrade Advisor is still in Beta phase, but according to Brandon LeBlanc, who tested the tool himself and posted his results in the Windows 7 Blog, it is working fine.
The Windows 7 Upgrade Advisor checks if the system matches the requirements for an update to Windows 7. Furthermore it tests if attached devices like printers, scanners or external storage devices are compatible to Windows 7 - so before you run the Windows 7 Upgrade Advisor you should plug in and switch on all devices you want to use with Windows 7.