The only way to remove Adware, Spyware and Malware is to load a program designed to find and remove them.

There are several out there like Spybot and Spyzilla most of these require you pay an annual fee for their service. The best ad and spy removal software I have found is called Ad-aware.

Ad-aware is made by Lavasoft^TM.

Lavasoft was the first to combat this growing problem and still provides their software for free.
Below you will find a link to download Ad-aware SE.
Below that you will find installation instructions and a short tutorial on how to use it.

Download Ad-aware to a location on your PC that is easy to get to, I recommend you download it to your desktop.

Click here to download Ad-aware SE

Now that you have downloaded Ad-aware double click on the Ad-aware on your desktop.
It looks like this

The install is very simple.
Just accept the defaults, be sure you accept the license, and click next until you get to finish then click finish.
Ad-aware will automatically update and begin running.