Did Windows Help and Support Center just popup?
If it did, you must download and install the Windows XP SP1 immediately.
You can’t see it, but there’s a line of code in this post that could have erased your whole Hard drive.
Normally this exploit works as a URL, where you click on it and it executes.
But, here it works in the background making it a hell lot more nasty.
If you’re using a pirate version of XP, the SP1 will cripple your system.
Instead go to C:\Windows\PCHEALTH\HELPCTR\SYSTEM\DFS\ and find the file uplddrvinfo.htm. Delete or rename it.
But if you install MS patches later on, it may restore files and settings defaults, opening that hole for a train to roll thru again.
No email or web page is safe.
Patch your systems now and while at it, dump IE for having ~17 known exploits, and not a patch in sight.