Thanks for all your replies.
I am using an xp machine at work - which is where im having the problems. However when im home using my xp, when i r/c the reg file and select merge, it asks me if im sure i want to put the file into the registry. I think thats correct isnt it? I didnt do it, but its good to know i can when i want to.
As for the works machine, i dont have regedit as an option, but what i could do is open regedit by start / run / regedit, and importing the file into it that way. i tried that and when i ran cc cleaner again, the same reg entries i previously deleted, where back again - so i must be doing it right. Can someone confirm this please - thanks again