If you want to learn a little aboutr how XP works, and also stop messenger,
go to the first URL. This is a simple procedure, and will help you with
future problems.
The second URL lists other XP services that can, and should, be blocked.

http://www.tacktech.com/display.cfm?ttid=210
http://www.blackviper.com

I have been using the Google pop-up blocker for a month or so (478 Blocked)
and it has worked perfectly.
You can get it at:
http://toolbar.google.com/
along with the Google toolbar which I have found to be indispensible.
*****************************
I have these constant nuisance popups that show up right on my desktop even
when I am away from the computer.  I don't even have to be using any
browsers, they just come right in. I understand that using DSL leaves your
pc vulnerable for these but there must be a way to curb or stop them.   I
remember reading somewhere in TCL newsletter that there is a way to stop or
block these ads but I did not save it.  Also, I am looking for a browser
popup blocker.  The only one I can find free does not work with Yahoo, which
is my browser.  If you have any tips, it would be much appreciated.

               The NOSPIN Group Promotions is now offering
              Mandrake Linux or Red Hat Linux CD sets along
             with the OpenOffice CD...  at a great price!!!
             http://freepctech.com/goodies/promotions.shtml