My internet page keeps going to nkvd.us and then best-search info - it will not allow me to change my default or even type another search engine over it. I have run Norton Antivirus, Adware 6.0 and Spybot Search and Destroy with no improvement. I tried to download Hijack This but it kept defaulting back to the best-search page. I have also tried to download cws shredder but the same thing happens. Help - what do I do?