Answers:
You PC is infected next to a smitfraud trojan. You can run here and use the smitfraud removel tool.
http://siri.geekstogo.com/smitfraudfix.p...
This connection will relate you how:
http://www.geekstogo.com/forum/help-remo...
Just copy and smooth mixture the intermingle contained by your browser, after follow the instructions.
Scan beside AVAST Anti Virus
here you can find booklet removal instructions:
http://fix-computer-problem.com/worms/lo...