The Messenger Service can't be deleted in NT/2000/XP or 2003. You can however stop it.
Not much else to comment I fear.
Can I simply delete Messenger without any troubles?
I have uninstalled it true the add/remove in control pannel, but it still there and it still working at startup.
I could stop the service starting in computer management, but I just want to get rid of it.
Can I just delete it in windows explore?
Thanks for your help.