I am toying with switching my kids laptops to apple from windows. I bought a Macbook it has OSX 10.5.7. I don't want to have to count on my kids to switch every application to print in Greyscale (black and white). Where do I go to set this so that any printing they do from their account is in black and white by default? This is easy to do in Windows. For the life of me I can't figure out how to do it in OSX. This is shaping up to be a dealbreaker, unless I'm just missing something. Thanks for your help.