Upgrade instructions for moving from Visual Studio 2010 RC to RTM
If you evaluated Visual Studio 2010 RC, you will be happy to hear that no reformatting is required simply open the “uninstall Programs” (or previously “Add/Remove Programs”) and uninstall all Microsoft Visual Studio 2010 RC programs Then you are free to install one of the Visual Studio 2010 RTM offerings.
However if you wish to complete clean your machine of Visual Studio and do not intend to use Microsoft Visual Studio 2010 RTM then we’ve published helpful instructions on how to uninstall Visual Studio 2010 RC, in the RC Readme under the Uninstall section.