Remove http://www.volunteercentre.org/search Hijack - Get Rid of Vc.org Search

About Http://www.volunteercentre.org/search 

If you have Http://www.volunteercentre.org/search on your computer, you may have the same experience like below:

Hello, recently while using opera browser there is one thing which annoys me especially - when I want to find something by writing it in google browser, suddenly it changes to sites called "http://home.searchpile.com"or "http://www.volunteercentre.org/search". I often download things like cracks, keygens for games or movies, games, music and mods for the sims 3. What's more the browser is way slower than before, it takes so long to open new site or load video on youtube. I hope someone can help me :)