Hey there, so I have come across an 06 imac, I really want this computer, I've taken it off the hands of someone who knows nothing about macs. For some stupid reason it has been loaded with windows XP. Now I now there is a way to load windows and mac but this one just has windows on it. I've tried to boot it up with a mac disk but it keeps loading windows. I've also tried holding down the "c" key when booting up butt I get nothing. Any ideas?