As the maintainer of the Mobile Mac Weblog, one of the things I get to do is upgrade mobile hardware. A while back I showed you how to upgrade the hard drive in a Mac Book Pro, or even install a second hard drive. In this Macworld video, I demonstrate the process of upgrading an older MacBook Pro's 802.11g wireless card to a new, faster 802.11n version. I also cover the kind of performance gains such an upgrade will bring you.