Ok I didn't see anyone mention it but there is a program called Ad-Aware mad by Lavasoft that will scan your system and get rid of Scumware, Adware, Spyware etc. It has always worked on these scummy trojan progrms that litter my computer when I am doing un-safe surfing. Iconsider Ad-Aware to be just as inmportant as Norton AV on my computer and keep them both updated regularly. Ther is a freeware (no ads) version for just scanning and cleaning and a plus version that monitors you system and stop the crap when it tries to load. I use the freeware version. you can find it at

www.lavasoft.nu

And no I'm not connected with them in any way.