I dump on Apple Computer when they deserve it, but this idea is cool: This week, Apple unveiled its new AirPort Express with AirTunes, a mobile wireless base station that you plug directly into a power outlet. Resembling an Apple power supply brick, the AirPort Express offers all kinds of terrific wireless functionality for both Macintosh and PC users. First, it's an 802.11g base station, so you can use it to share an Internet connection. It includes a USB port for wirelessly sharing any USB printer. It includes an audio-out port, so you can connect it to your home stereo and wirelessly broadcast songs to the unit from iTunes. And you can even use it as a wireless extender for extending the broadcast range of your existing wireless network. Because the unit is so small, you can take it on the road to share Internet connections in hotel rooms, or place them around the house as you need.