bilbobo wrote:

Sorry, I'm just a normal PC user. How do I find %appdata% -in
regedit?

No, in Windows (not Internet) Explorer. Open Windows Explorer and in the
Address field enter

%AppData%\Microsoft\Outlook

Click Go. You should see Extend.dat in the contents pane (right side) of
Explorer.

ANd what should I be looking for in registry keys?

You said you were getting a series of pop-ups that mentioned certain files.
Look for those files.
--
Brian Tillman