Prior to migrating to Windows 7 from Windows XP it would be best to run the Windows 7 Upgrade Advisor.
To determine if your current computer configuration will be compatible with Windows 7 please go to the following link: http://tinyurl.com/no4xb7
Another resource to verify compatibility is available at the Microsoft Windows 7 Compatibility Center located at the following link: http://bit.ly/1gW6Ns
Also, you may be able to use Windows Vista drivers if Windows 7 drivers are unavailable.
Microsoft Windows Client Team