If anyone is interested:...
So the other day I was vacuuming around my computer, which sits 5 feet off the floor when it tipped over and fell on the floor. My harddrive flew across the room as did my video card and a few other bits and pieces (my case is open and nothing is screwed in). It destroyed both a mouse cable end and ripped the speaker wires in half... oh and split a fan in two.
Well after I had adjusted to the horror of the disaster, I put it all back together, found another mouse and speakers and switched on. Alas! the hard drive is toast ... just clicks and thats it. (2tb down the tubes!)
Sooo.. whats this to do with this topic?... I did this: I took a another harddrive - reformatted with Win7 and the first time it came on, without even changing the default video settings and even using IE (ugg) to download Ccleaner I cleaned the brand new registry of less then a dozen errors Win7 made while installing, and then I downloaded the UNmentionable program from the first post again from Cnet.
After I ran this UNmementionable program on a brandnew install of Win7 on a clean drive, it reported back 300+ registry errors that it would only clean if I paid money for the 'pro' version.
So after all this I can see that those hundreds of errors 'found' are are indeed insignificant and therefore I now agree that one does not need such an agressive registry cleaner.
On that basis I can recommend Ccleaner.