Pit, I've done something not even a 4 year old would do = trust 4chan

I don't know WHY I did it, but I did. I downloaded something that Anon linked. And now I have a virus. And I can't get rid of it.

Here's the deal. I downloaded it, felt foolish, then deleted it right afterwards. I thought that was it. However, today, my friend started asking my why the **** I was linking child porn on my MSN. I was like "DOOD WTF" and he said that my MSN started IM'ing everyone links to child porn sites. And when I got home to turn on the computer today, the first thing that came up was a youtube vid of this POS black metal band. I guess the prankster was a metalhead. Anyway, HOW DO I GET RID OF IT?!?

I don't have any antivirus software, so what do you recommend? Something preferably free.
R.I.P. Ronnie James Dio. Supplied amazing music to both me and my mother.

He will be missed.
Eh... are you sure your friend isn't just messing with you?
Download the free version of AVG

Trusting 4Chan is seriously retarded.
Not trying to sound offensive but dude WTF!!!
"Don't piss in my ear and tell me it's raining" - Wrex
Stop going to 4chan.

It rots your brain.
Most of the important things

in the world have been accomplished

by people who have kept on

trying when there seemed to be no hope at all