My old rig

[Schwa-D-Alien]

It's a 400Mhz Celeron with 128mb RAM and a 6.8gig HD/DVD ROM, 1024x768 TFT [$230CAD]

WiFi Card is a Linksys WPC11 V3, no mods so far found 7,639 new networks. [$25CAD]

Was using WinXP and Netstumbler, but recently put MEPIS Linux (Debian) on it and it's working very well with kismet.

GPS was an older Deluo USB model, worked okay, but it was borrowed and now I'm looking for a replacement.

I'm also using a 75watt inverter to keep the laptop juiced up, but it wouldn't hurt to have a bit more power because sometimes it draws too much when it's working hard and charging the battery.