http://nkvd.us/1525/

Having just joined Wilders, I am struggling to find where in the site to get help with this hijacker. I have spywareguard, spywareblaster, adaware, spybot s&d, mru blaster, zonealarm, & norton antivirus. I have entered nkvd in the spywareblaster custom blocking tool. but it still comes up. Also i get hijacked by other hijackers identified only by strings of characters that make no earthly sense to me.
Assuming the way i have described the problem is intelligible, is there anyone who can suggest how to remove these irksome programmes?
Many thanks
pmb