That is known as the auto-complete function.
Windows Mail does not auto-complete from your contacts.
It uses a separate list of the last 29 recipients you've sent mail to.
You can delete the entire auto-complete list:
http://www.winhelponline.com/article...dows-Mail.html
Or try this utility to selectively remove just some addresses:
http://www.winhelponline.com/article...dows-Mail.html
The auto-complete feature works perfectly in the replacement
program, Windows Live Mail, which uses the standard contacts list
for auto-completion.
You are encouraged to upgrade to the newer WLM program:
http://download.live.com/wlmail
--
Gary VanderMolen, MS-MVP (Mail)
"DMTJR" <DMTJR@xxxxxx> wrote in message news

6173179-170A-4232-AD31-4EF77E3B8F32@xxxxxx
> the messages are long gone, but the "memory" of them continues somewhere
> inside MS Mail. I typed an incorrect email address and have been "paying for
> it" ever since in error messages. I've tried the solutions I've seen in posts
> (ms solution page, util, MS Live Mail install), but nothing is working. any
> more suggestions?