i was infected with worm.win32.NetSky, help me plzz

Hi my computer got infected 3 days ago. According to the computer is said i was infected with worm.win32.NetSky. I continually get a pop-up that says "Windows has detected an Internet attack attempt..." Upon closing it, it launches Internet Explorer with a website such as udefender or pcsecuresystem. Also, my background has been changing to a red and black image saying that my privacy is in danger and to download all of this stuff to stop it. The CPU is running at 100% use constantly! Please help i need my computer for my work asap! i'm using my computer for video editing and my friend said i've to format my computer but i'll lost my software that regarding me to loose thousand dollar or in my currancy (ringgit) Thanks. - I saw someone else on the forums seems to have the same problem but hasnt appeared to solved it yet! Please Help!

 

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