I am planning on installing windows vista onto my macbook pro very soon, but I have a couple of questions. First, is it absolutely necessary to have an external usb keyboard during the setup? Would an apple bluetooth keyboard work instead? I recently traded my usb keyboard for an apple bluetooth and would have to get another usb if it is necessary. Also, I am trying to decide how much space to allot the windows portion of my hard drive. I will only be using the windows vista part for a few programs..none of which require very much disk space.