Antivirus 2009 a virus or a trojan?

I Googled on a newspaper article and after reading it some popups called Antivirus 2009 came up. It keeps cycling me around its popups and will not let me cancel out. It told me I have dangerous spyware on my system.
It wants open a window and install something called InstallAVg_880135.exe

How do I get rid of it?