There are free antispyware programs available. Microsoft has a beta version which is free and is very good. The other well known makes are AdAware by lavasoft and Spybot Search and Destroy. You can easily Google to get the download sites.
I also use SpySweeper by Webroot, a pay program that is fully featured and well supported.
Good luck at getting rid of it. But don't be surprised if you end up reformatting your system. Some of that stuff is very nasty. It is sad to know that the major antivirus programs are insufficient to deal with this. You need a proper antispyware program as well.
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