Disable MS Messenger

I am using windows XP and want to disable ms messenger. I have disabled it in startup using msconfig but every time I launch outlook express it comes back. I have disabled log onto msmessenger in express but it still launches. Where is the off button for this thing???
Besides this I am pretty happy with XP.
Peace,
Hamill

 

It also has a check box in the program. If you look under tools>options>uncheck the box for load when widows does. Then do the msconfig and all else right after before you restart.