I was having a problem with Windows Live Mail and erroneously filled in a new form using my existing username, rsump, and checked the box to make this my default.  So I now have a rsump username and a rsump (1) username.  Now, when I access my email, it doesn't show my previous 'sent' emails which I presume are still with the rsump email.  How do I get back to using my rsump username so that I can see my previously sent emails?