I am currently using the excellent Reg Mechanic and it has worked flawlessly with Vista. My annual renewal is due soon and it is approximately £30 to renew for one year. I shall of course see if I can get a better price on line but I have been considering using the free C Cleaner.
Has anyone here had any experience using C Cleaner with Vista? I am particularly interested in any unfortunate experiences which have required the use of the restore function having deleted an important software component.