OK, case is this:
My friend visited me few days ago, he wanted to download something from internet. He used my computer because he doesn't have internet connection, of course I was stupid enough to approve the use of my PC...
I don't know what he downloaded, or what sites he visited... but now I have this.. "program" on my hard drive that wants to visit
www.lop.com frequently. When I booted my PC, I saw that my desktop was changed, displaying some sort of
www.lop.com search engine, I've gotten rid of it since, or so I think.
But still, it directs my browser to
www.lop.com pages by force frequently, not always but sometimes. I have searched all my files and system registry for
www.lop.com references, deleted them if there was any and booted. Didn't help...
Can you please help me to got rid of this? I just formatted my system few weeks ago, and not very interested to do it again...
Help...

Edit: I have also searched my Add/Remove programs if there is any new stuff installed, found nothing suspicious. Also tried Ad-Aware spyware remover with newest reference list... found nothing. It must be a program that starts with windows, looked at starup folder and system registry for suspicious files and nothing...

Edit2: I will kill my friend for this...