Remove BlockNSurf - Guide to Get Rid of BlockNSurf Completely

Complaints about BlockNSurf:

Hey guys, i have a problem. Since a few days ago, my browser is cluttered with ads, with the writing "Ads by BlockAndSurf" under them. I read that it may be caused by a program so i went to the control panel and uninstalled every suspicious software. But the adware is still there.My pc has Win7 Professional 64-bit. I'd appreciate it if someone helped me out!