how can i repair my hot mail sever?

i reinstalled vista after an aborted attempt to upgrade to windows 7. as i was reinstalling hot mail, i mistakenly entered pop3 & imap as my servers, i should have entered mail.so.centurytel.net for incoming & smtpauth.centurytel.net for outgoing mail. now i can find no way to change these servers or keep my old internet ID