I completed the "registry settings" fix as stated above, but still get the error???

Can you post a screenshot of the contents of the key you've been editing, please? Include all of the regedit screen, including the left-hand column. Save the screenshot to an image file, and insert the image file in a reply by clicking the wee camera icon at the top of the reply window.

For example, this is what I'm seeing when I look at my key:

🙂 many thanks, Cathy.

Your key looks good. No mistakes in the editing whatsoever.

Checking on something else you mentioned earlier:

I am still getting the "registry setting" error when trying to open Itunes..then it stops working.

What error message do you get when iTunes stops working?

(Usually the registry settings issue doesn't cause iTunes to close ... so fingers crossed the second error message might give us more of a clue as to what is going on here.)

🙂 Thanks again.

Your Vista will have been recording some information about those ones.

Go into your Problem Reports and Solutions Control Panel, click on the Problem History, and look for iTunes problem reports that occur at the same time as those error messages. Open the iTunes problem reports and have a look through them. Do they all say pretty much the same thing? If so, paste the contents of a typical problem report into a reply here so we can have a look.