Download Zero Popup Killer
Zero Popup Killer is a handy and reliable application useful to protect your computer and monitor the traffic running through your network. It will detect and stop intruders trying to get into your system to corrupt your registries. It will scan your drivers to find any false activex working as a spy. It will make your surfing experience the coolest and more comfortable. It comes with one of the most powerful pop up blockers, nothing can get through it and you can forget about those annoying ads appearing all the time in your screen.
This is a really light program, it won't consume your system resources and it's easy to install.