I have a PDA system currently listed on eBay. It includes a Dell Axim
X5 with Pharos Transplant GPS. Street Atlas maps are included but not
current or accurate compared to newer software. Works well with SeeYou
and Glide Navigator. Extras include an external GPS antenna, PDA mount
for window or canopy, 1GB SD card, car power adapter, external battery
pack (4 AA), Dell protective case and a WiFi adapter.

This is everything you need in a PDA system and it starts at $150.

http://cgi.ebay.com/Dell-Axim-X5-Mou...QQcmdZViewItem