Google has failed me and the parts of the Elite website I've been able to reach claim I've never played the game... so I was wondering if any of you guys had come across one. Thanks in advance.

Skel

here, let me google that for you

oh here we are

http://www.mw3perks.com/

don't thank me

@jetsetwillie: That's a list of the perks, not the challenges that you must perform to unlock the pro version of them.

But thanks for being a jerk about it.

This is the closest I've been able to find, which is basically just saying "use the perk". I may be mistaken, but didn't Black Ops have three things you needed to do for each to get pro?

http://www.gamefront.com/modern-warfare-3-multiplayerperk-guide/