Jim, the email address you create in OL becomes a Passport (i.e. Windows Live) ID. In other words, create an address such as me@mydomain.com and that is now a Windows Live ID. Your other WLID is an existing email address "you've been using for 8 years." That's why it is telling you it already exists. There cannot be two addresses with the same name. The closest thing to a work-around is to forward mail from your office live account to your 8 year old account.