Hi Lillikins, and welcome to DCF:

I don't use McAfee (won't allow it on my PC) but perhaps this info will help:
http://uk.answers.yahoo.com/question/index?qid=20061002092158AAuqFDw

or
http://community.mcafee.com/showthread.php?p=502459

(I also have to say that I can't recommend Norton 360, and wouldn't trust my PC's security to anything from my ISP- but that's just my 2 pesos).

I to tried many times to remove the McAfee Shredder, ran all the removal tools, tried registry cleaners, etc.

This is what finally worked for me.

(Run) (regedit) In the registry editor window, go to HKEY_LOCAL_MACHINE >> SOFTWARE >> Microsoft >> Windows >> CurrentVersion >> Uninstall.

Find the key named {625BD732-ACDF-4552-BF22-98EBB413B6F3} delete this key, close the Registry Editor and try the installation again.

At last it's gone, and I have downloaded my free Norton from my ISP.

Thanks for the help!!!!   Sorry it took me so long to use your advice, but I was away from the computer which had the problem.  Your suggestion worked like a charm.

Thanks Again.