Antivirus 2010 is a very insistent program that wants to download itself and protect your computer.
Do not fall for it. Antivirus 2010 will not protect you from malware. In fact, it is malware. It's a rogue program, pretending to protect you from infections while infecting your computer.
If you get a pop-up warning you of danger and suggesting you install this wonderful program, don't click Yes and don't click No, either. Close the window.