got a weird virus over msn, please help!

<p>i don't have anti-virus, or recovery,
the virus is doing something really wierd, it won't let me install Norton Antivirus, and once it was installed, the virus could not be quarantined, and the other day, i opened windows media player, there was some weird video clip on it i have never seen -_-?
any recommendations?</p>

<p>Buy a Mac and don't worry about this type of thing.</p>