Posted 17 December 2008 - 08:25 AM
If you are worried about ruining your registry, why not back it up first. If your not sure how to do it, go to start, run, type "regedit" that will load the registry editor. Unfortunatley i am on a linux box right now and dont remember the menu where the backup function, but look at the file menu and rest of the strip and you should find a backup/export option. Do that and save the file, then if your CCleaner run does harm, you could go back to the registry editor and import that backup you made.
Personally though, i use ccleaner all the time, and i never use the registry scanner. In my opinion, its not too necessary to remove entries unless the are malicious. A lot of time and possible issues afterwards, and it wont speed anything up too much. but thats just my opinion