How to removed this msn messager tab thinky

I recenly dont have this but after my com have some back up prob, i have this, please help me! I find this too irritating!

hey come on!

saw this problem before, but forgot how to disable the option liao. wat version are u using?

I think is Window Live Messager 8.0

so you know or not?

hey i asked for the one on top not the one for the one u view contacts lists