How do I get rid of AntiMalware 2009?

Well I downloaded SuperAntiSpyware and it got rid of some virus's that I had but it didn't get rid of this AntiMalware. Today Antimalware just popped up on my computer and started scanning and I wasnt sure about it so I didn't click on it. People told me that it's a virus and I don't know how to get rid of it. What is some freeware that I can download to get rid of this virus? Thanx