If you already have an account, BTyahoo! Thus, you can easily use BTyahoo! you can switch between services and any changes to existing Yahoo, you can change it.
On BTyahoo Sign In Internet on the desktop or Start menu and register the user options (see single point - the selector section user manuals), just "another user" option - icon and enter Yahoo ID and password, please.
If you have no other choice, you simply enter your login http://bt.yahoo.com Yahoo ID and password.
When you log into your account you can access Yahoo! from Yahoo.
A future version of Internet BTyahoo Sign In Internet account to Yahoo merger of existing accounts, so you can book the name of the contact list Messenger, email, calendar, address, photos and files in the briefcase BT Internet Yahoo! your changes will be made.