Clean the Registry - The Old Skool Way

[Negative]

Here's a little trick to clean your registry for useless references:

Open a DOS prompt:

C:\>REGEDIT /E C:\REGFILE.TXT
C:\>REGEDIT /C C:\REGFILE.TXT


The first line will export the registry to a text-file (regfile.txt).
The second line restores the registry from that text-file. A nice "side-effect" of this method is that this will screen the programs in regfile.txt to check if they still exist. If they don't, they aren't restored.

[mjk]

Got an error "Cannot import c:\regfile.txt: Not all data was successfully written to the registry. Some keys are open by the system or other processes."

Does this mean that it worked? Or does it mean I'm screwed? Or should I not worry about it? :)