Spam with XP

It seems you did a subscribtion in a porno site or in a
site shared its data base with a porno site anyway you
can fix that easily by go to your msn messenger tools
then options then privacy and check near the Only people
on my allow list can see my status and send me messeages.
now you will not receive from these porno site anymore
but take care its mean nooone can send messeage to you if
he or she isnt in your contact list.
-----Original Message-----
I just installed XP and now every once in a while I get
a pop-up from
"Messenger Service" . These messages direct you to a
porn site. I am
using the same programs now as I was before and I never
got these
messages before. Any ideas on how to keep them from
popping-up or why
I am now getting them?????
.