I want to buy an old and cheap Mac G3 solely for using Garageband. I know nothing about Macs and am just curious if OS 9 has Garageband and if I can get the latest version of Garageband running on OS 9. If not is it possible to install OS X on a G3? Also, is Garageband integrated with the OS or do you have to purchase and install it separately? Thanks for any and all help!