Answers:
A free program call Ad-aware. A great program and even better within full performance. The free one will suffice for poster removal. That includes tracking cookies.
go to lavasoft.com and download the free software program. Once downloaded, run it, and it works great!!
You can do a disk verbs up that will win some of them. And also attain Ad-Aware se. It is a anti-spyware program and its free. You can return with this at www.download.com.
Here are a few programs that I use:
Ad-Aware 2007 Free
https://secure.lavasoft.com/products/ad_...
CCleaner (Freeware)
http://www.ccleaner.com/
Easy Cleaner (Freeware)
http://www.toniarts.com/products/?phpses...
Spybot Search & Destroy (Freeware)
http://www.safer-networking.org/en/mirro...