Atapi --

I've been using a Lucent Gold card so far and have had quite a bit of luck with it. As long as you're driving around in commercialized areas (plenty of tall office buildings) you'll definitely get signals. My first day out, within an hour I had picked up about 45-50 different AP's. I have the external antenna on order, because for $80 bucks it will help me out further with this project.

As for GPS, I'm currently using the Rand McNally GPS - the one that comes with their mapping software. Works well so far, no issues yet except for the fact that it powers itself off of a keyboard port (and my laptop doesn't have one) so I'm working on an alternative power source for it.

-Doug