Gary,
I wasn't very clear when I posted my last message.
When you create a new user and then restart with that user you are finding out whether or not the Finder is working correctly.
If that is the case, then you locate and trash the Finder preferences of the "original" user which are messed up.
The easiest way to locate preferences is to use the keyboard shortcut - Command +F. Type finder (not case sensitive). You will be presented with a list containing the word finder. The one you are looking for is (as you know) com.apple.finder.plist.
Trash the preferences of the original user at this point because it's not being used. When you log out and restart in your original user, the prefs are re-written.