Q. After installing the Windows 7 SP1 RC, it shows my installation is an evaluation copy. Does this mean I'll need to reinstall?

A. Don't panic, this is normal. Although it says it's an evaluation copy, it's only because the RC is time-limited (you can see this by running winver.exe). Once the RC is removed and the RTM SP1 installed, your installation will no longer be an evaluation copy.