Not every user of Windows XP wants to use MSN
Messenger.
However if you try and set the options so that
MSN Messenger does not load when Windows XP loads up. You often find
that this does not work and MSN Messenger appears in the system tray
again!
(NB - If you
came her looking for an article on Disabling the Messenger
Service, then read this article:
http://www.updatexp.com/messenger_service_spam.html
)
Now there are a couple of methods to Disable
Messenger MSN.
This is my personal favourite:
Step 1) To
Disable Messenger MSN from running go to the start menu and
select
RUN. In the window that appears type regedit (see
example below)

Step 2) The Registry editor
will now have opened. Navigate to the following Key:
HKEY_LOCAL_MACHINE\Software\Policies\Microsoft
Now create a new key by selecting Edit from the main menu
bar. Now select New then Key.
Name this new Key: Messenger
Step 3)
Now select the newly created Messenger Key and create another
new Key. Only this time we are going to name it: Client
(The key should look like the example below...)

Step 4) Next we have to
create a DWORD value. So Right Click the new Client
Key and select New then DWORD.
Name the DWORD PreventRun (see example below.)

Step 5) Now we need to give
it a Data Value of 1

Step 6) Now restart Windows
XP and you will have successfully Disabled Messenger MSN