There are three methods to resolve this problem.
Method two causes some problems when visiting sites such as Hotmail and
using some programs such as IE, Outlook, or Remote Assistance. Method one is
best for XP Professional users. [Of course they work wonderful together (what I did)]
The Method Zero is the way to annihilate MSN messenger from you system --
just remember you can't get it back.
NOTICE: I've seen that with some of the new
Hot Fixes the Add/Remove ability is available.