mozilla not working

can any one help me to come out this problem “My mozilla firefox is not working on my system. when i tried to go in it ,a dialog box comes saying “USE INTERNET EXPLORER YOU DOPE” I DNT HATE MOZILLA BUT USE IE OR ELSE” and after that every thing shuts down by itself. i am very used to mozilla & right now having very tough time.” plzzzzzzzzzzz help me.
Answer #1
the message was displayed by a worm called W32.Sillyban.A. This worm monitors the title of the active internet browser windows and if found that it contains Mozilla FireFox string, it will display the message:
�USE INTERNET EXPLORER YOU DOPE, I DNT HATE MOZILLA BUT USE IE OR ELSE��
Your Mozilla Firefox can also be close without your intervention followed by the playing of an audio file located in the directory �c:\heap41\2.mp3″
This is what to expect if you are infected with W32.Sillyban.A.
Answer #2
I Suggest you download some new anti-virus and start scanning