I have a 15" Core Duo MBP. I purchased a second power supply for it because I only used it in two places (and made my life a little easier). I hadn't needed to use the MBP as a laptop for a while and ended up connecting several devices to the computer. Now every port is used except the audio in jack. I'm back to needing a laptop, and the thought of constantly having to unplug and re-plug all the devices was a bit much for everyday use so I bought a MacBook. Which brings me to my question: Can you use the MBP power supply on a MB? I don't travel to places where I can't plug the computer into the AC power so I don't want to buy a second battery, or a second power supply if I can avoid it. Any info is appreciated.