"Brian Tillman" wrote in message

That list of names you see popping up as you type a name into the To box is
coming from the Nickname, or autocompletion, cache and it has nothing to do
with the Contacts folder, the GAL, or AD. It's there because the user tried
to send a message to that address in the past. To delete it, use the arrow
keys to highlight the bad name and press Delete. If it's the only one, see
http://support.microsoft.com/?id=289975

Sorry...but that's not the problem. That was the first thing I tried.
I can delete that name and send her another email, try it again and
it still happens. I've found where the wrong alias is listed. When I
open the global address book in outlook and check the "email address
field" -- I see the wrong alias for the two people in question. It
says: /o=xxxxx/ou=First Administrative Group/cn=Recipients/cn=WRONG
ALIAS. Now I'm trying to figure out how to change that. Any ideas?