I know that they are in EDF bomb caches, but I don't know where any caches are, or what they look like. Can anyone help?

I've played the game, and managed to come across ore without actually seeing it, so I don't know what it looks like. Does anybody else know?

OK, so new question. It's been released today, and guess what. No email with the code has been sent?????? What's up with that!?!?!?!

But the reason I ask is because I don't have live, so...

OK, so I've pre ordered Red Faction: Guerilla from Amazon.co.uk, so I was just wondering whether anybody knows if you have to have xbox live to enter the code to unlock the skin?