Best Buys' Geek Squad offer full upgrade service for customers moving to Windows 7 from Windows Vista or Windows XP for $39.99. Normally they charge for a Operating System Install $129.99.
If you are not an experienced Windows user this is a great offer. Just remember to backup your data before handing over your PC or notebook to the Geeks.

"Some users will be able to perform the upgrade on their own, once they receive their disc from their computer’s manufacturer," said Geek Squad Agent Alex Smith. "For users with more complicated installations, such as upgrading from Windows XP, the process is more involved. It may be better to leave such computers as is or buy a new machine entirely. We’ve built a couple of basic tools that can help you through the upgrade process - Best Buy Labs. And for those who simply don’t want to deal with the hassle – we’re ready to help."

Also, customers who purchased a qualifying PC from Best Buy between June 26, 2009 and October 21, 2009 (qualifying?) don’t have to wait for the mail. Those customers can bring their PC and receipt to the nearest Geek Squad Precinct to receive a free Windows 7 upgrade instantly when they purchase the $39.99 upgrade service on or after October 22.
More Windows 7 News.