You do not need a new radiator!!!!!!!
Just replace the old fitting it is very simple. Make sure not to let the old bits of fitting fall into the radiator.
Bob I have already taked to you about this very problem (well maybe it was your wife).
Look at this post that I had made on the very same subject, and you replied to it.
http://www.peachparts.com/shopforum/showthread.php?threadid=23934
Good Luck
Subman