If you want to check and see if your computer (and favorite USB devices) can run Windows 7, go to the following site and run the Windows 7 Upgrade Advisor.
After it’s been downloaded and installed, click the Windows 7 Upgrade Advisor icon on the desktop. Be sure to plug in ALL devices that may be used in Windows 7. I ran a check with 2 USB drives (one 320gb WD and the other a 1GB drive my dad got from work) and my camera attached.
Click Start Check
The Windows 7 Compatibility Check is launched and will run for a few minutes…
Once the compatibility check is completed, a report is generated detailing any information or issues concerning an upgrade to Windows 7.