Beware my AVG does not like the latest version of the YTD video down loader thus obliging me to block and remove it.
However amazingly I find I am allowed to use the crude method of copying the whole folder of an earlier version on my old PC with Win XP into the Program Files of this 64 bit Win 7. The YTD.EXE still works perfectly from a shortcut, but of course it will not show among the Add Remove Programs . I dunno if I would have been allowed to copy it into Program File(x86).
If any want this older safe version and it is OK for me to offer it to anyone I will upload the full Zip to my site and post the URL here.