XP antivirus 2008????

Hi,
My computer is infected with spyware and I do not know how to get rid of it.
Last 4 days I have been getting annoying pop ups.The name of the website is XP antivirus online scanner.That website is trying to tell me that I have some spyware in my computer and wants me to buy their product.
I have scaned my computer with Norton,Ad-aware,Rouge remover and Spyware hunter and I have got no results.
It looks ,that my computer is clean.
But I am still getting those pop ups.
Can anybody help me ?

 

Hi robertino,
Welcome to Major Geeks!

Please go through the instructions in the READ & RUN ME FIRST and attach the requested logs when you get done. The procedures will reduce some of the problems you're having and afterwards we can look at your logs to see what files still remain that need to be removed.

Thanks.
abri