What program are you talking about? The combined community codec pack? If that's true, then everybody that downloaded it should have it, right?
You don't think it's possible that you could have picked it up somewhere else?
To get rid of it, use the the free anti-malware program malwarebytes:
http://www.malwarebytes.org/
If that doesn't get it all use the combofix program:
http://www.combofix.org/download.php
Instructions on how to use combofix:
http://www.bleepingcomputer.com/comb...o-use-combofix
My brother got the same virus a couple of weeks ago. Malwarebytes took care of most of it and combofix the rest.
But, since you think you got the virus from me, I doubt you'll believe me.
-Toby