jv16 PowerTools 2009 has not a full registry backup feature.
The reason why is explained here by the developer.
There exist a couple of free good and fast full registry backup tools, such as:
Erunt that you can find here: http://www.larshederer.homepage.t-online.de/erunt/
Regbak that you can find here: http://www.acelogix.com/freeware.html