Select the Accounts tab, and then click the New Email in the New Account section.
Fill out the email address, password and display name. Please note, the password is the password already associated with your 123-reg email account. Click the manually configure server settings option at the bottom of the window, and then click the next button.
In the configure server settings window, select the POP server type. Your incoming server address is pop.123-reg.co.uk. The logon user name will be your email address.
The outgoing server information is smtp.123-reg.co.uk. Then click the Next button.
Your account will now be added to Windows Live Mail.