Sounds suspiciously like that BlasterWorn virus that was going around a while ago...
That'll teach you to keep looking at all that porn! 
It does indeed Krueg.
I had the same problem for a bit, damn por...I mean pro-libertarian sites

.
What I did D/L the fix off of another computer (work, home, friend, whatever). I got the fix from Norton's website. I then started the infected computer in Safe Mode (ensure the infected 'puter is not connected to the internet...not sure if that matters or not, but it was the step I took) and transfered the fix file via floppy (it is a small file) to my infected computer. I was able to run the fix in safe mode and the problem went away.
Others may have a better, or at least more efficient, way of getting rid of the BlasterWorm, but that one worked for me.