Internet ereaser

I was just wondering if any of you, my WBW comrads knew where I might be a ble to find a free copy of this. I have gotten some weird pop-ups, which are starting to freak me out a bit. I would be very thankful to anyone who could assist.... Thanks.

AdAware is a good start www.download.com

Spybot Search&Destroy is good too.
http://www.safer-networking.org/