He didnt change any code. The tabs he has are msn alerts. Jeez. They can be set up for MSN messeger via
http://alerts.msn.com/alerts/SignUpAlerts.aspx?rdr=1
There are no custom tabs he has. Those can be set up at the site above. He just signed up for them. Those are the default tabs, which need to be set up, as was stated before.