WindowsMail remembers the last few entries you put in the "to:" box.  It will only remember the entries for the last few days or the last boot.  If you used the name, it will remember that and auto fill that.  If you used the address, it will auto fill that.  My brother's name is Dan and is address is dpw7@????.net.  When I type in "D" I get both options to select from.  The more I type in, the narrow the auto fill options.  Works exactly like the Google toolbar auto fill in IE7.  It will only remember your recent entries until that memory area is flushed.  So what you get is dependent on what you put in.
Bob, Still Old, Still Grey, And Still A Woolf

No trees were harmed in the sending of this message and a very large number of electrons were asked their permission to be terribly inconvenienced. And a party was thrown for them afterwards for being really cool about it.

Bob's Space - Home Page of the Olde Greywoolf

 I used to have outlook express,
 and when i wanted to send mail to Tim
 i could type T and the rest of the name would appear as long as tim was in
 my contacts.

 but now in windows vista, when i put Tim in my contacts
 it auto completes his address not his name
 so.....if tims address is adsfsdf@wwe.com
 typing in his name helps me none....

 is there any way to change this????????
 thanks,
 George
 george@irecovered.org

Windows Mail does not auto-complete from your contacts.
It uses a separate list of the last 29 recipients you've sent mail to.
The auto-complete feature works much better in the replacement
program, Windows Live Mail:
http://get.live.com/wlmail/overview