Random popups?????

First off... I know this is the wrong forum, but I would like an answer to this ASAP as it is REALLY alarming me....please forgive me.

I have been getting random pop-up ads lately that have been booting me out of DAoC... I have nothing else running and do NOT have any ad-ware on my computer.... First time it was some porn show thing, and this time someone selling long distance... I have never seen anything like this before... is this some kind of security issue with Windows XP? The ads are directed right at my IP address and look like a chat dialogue.... How can I fix this problem? I don't even have Active X enabled on my browser cuzz of some of this sheit web masters are pulling these days... but I am dumbfounded at this.. the first time it happened I freaked out but wrote it off as a random occurrence.. but it is getting ANNOYING.....

Here is part of what the last pop-up says...
"Message from TELEWRX to 24.127.4.186 on 9/17/2002 9:01:05 PM

NEVER PAY FOR LONG DISTANCE AGAIN!

Unlimited long distance calling has finally arrived!
...blah blah blah (editing)
then at the bottom is and OK button....


What is REALLY bugging me is it is being sent to my IP address..... what the HELL is this sh*t????

I have no Adware installed on my computer and this reformat is less than 2 weeks old... here is a list of every program that is on my computer....

Photoshop 6.0
Battlefield 1942 Demo
Hitman 2 Demo
Gamespy Arcade (this is a new install, happened before this was installed)
Logitech Mouseware
3D Mark 2001 SE
Dark Age of Camelot
SOYO Hardware Monitor (my motherboard monitor, happened before this motherboard)
Warcraft 3
Winamp 3
Acrobat Reader 5.0
and the standard windows stuff (IE, Outlook, etc)


Also, I have spoke to someone else who is running their internet through a full router/firewall setup unlike my straight up hub network, and she has been getting the same exact thing.....

I knew someone would mention firewalls.... but as I said, the person I talked to is running a router/firewall network and is getting the same thing....

I think I discovered the culprit.... went into Administrative tools > Services > and disabled "Messenger"... apparently XP uses the "Messenger" to send you system alerts of some kind... however Microsoft seems to have overlooked the fact that this could be abused by advertising companies.... I don't believe this (ok well I DO believe it, but I don't WANT to)