Thank You Rahul !How foolish I feel, that I could not find the answer on my own

You can manually delete the following key "HKEY_LOCAL_MACHINE\SOFTWARE\ComodoGroup\CDI\12".
Install and uninstall tips like this should be found with each software in the faq page.
Did notice that several software that CVA showed there was new updates. After I downloaded it the files, dates were the same with the installed version?.
Two of which were JKDefrag and Process Explorer, another I did not even attempt to download was
Open Office, the reason was that the File Hippo "
Update Checker" only had
one item in its updates for my system and that was
Nvidia Forceware update, which was not in the CVA list.
Open Office is one that it does list new updates for.
Also it showed PowerDVD has an update, glad I read the fine print. The Free version I now use would have been over written with a 30 day trial.
Again Thank You for the easy tip !

UncleDoug