Where do I install FM2012 facepacks and kitpacks?

Logos/Kits/Faces
Extract to \My Documents\Sports Interactive\Football Manager 2012\graphics or Your User Data folder if you have moved it. The folder named 'graphics' may need to be created

Turn off the skin cache in the preferences -> Display and Sound menu and tick the 'Always reload skin on confirm' option to get the logos to show.