I am thinking of switching of switching to a Mac within the next few months but first I have a few questions. First; if I were to buy a used 500Mhz Powerbook G4 would I be able to upgrade it to something a little faster like 1.3 or 1.4 Ghz? Secondly, I have a wireless network in my house (lynksys 802.11b) would a Powerbook with an Airport card be able to use that network? And last, If I were to put all of my music on a data cd, would I be able transfer it onto the Powerbook?