mal ware is not ani virus ...

There are a couple of things you can do

1) install AVG FREE -> [url=http://free.avg.com/download-avg-anti-virus-free-edition?cmpid=fr_bn_free_670]AVG Free - Download AVG Anti-Virus Free Edition for Windows 7, Vista and XP[/url]

2 Install spybot - (this is your malware protection) -> [url=http://www.safer-networking.org/en/index.html]The home of Spybot-S&D![/url]

install both , update both, register AVG free (its free) and run the program to remove infections.

thats all you need to do if its a more advanced version of malware let me know and ill point you in the right direction.