Yea I will be upgrading to RC, i have always done clean installs, but this seems different to me, just beta and rc, and my files and programs are how I want them. So too much work to reinstall and format and all that.
According to the email I received from Microsoft about the RC:
IMPORTANT: If you are running Windows 7 Beta you’ll need to back up your data (preferably on an external device) and then do a clean install of the Windows 7 Release Candidate. After installing Windows 7, you will need to reinstall applications and restore your files. If you need help with the installation process, please see the Installation Instructions.
Please note: All users of the Windows 7 Release Candidate (including Windows Vista users who have upgraded to the Release Candidate) must do a clean installation of Windows 7 RTM. Please keep this is mind as you consider downloading the Release Candidate as opposed to waiting for the general availability release.