OK guys I get the picture!
When I say my Registry is corrupted, I mean that my normal access to is now denied. I can enter it, but I can no longer edit it??? Now I know what you all are going to say and I DON''T mess with my registry at all! I know what I am doing when I do edit, but by and large, I leave my Reg well alone!. However keys that I know I can change ( or could), I now can't!
This worries me, hence my post.
I am Win7 64 and have had the recent problem of losing my Steam account to some *censored* who is going around taking them from folk, so I am scouting for other problems as well.