Curious about the technology behind some of you cachers out there - I'll go first:
I use a small sized Sony Vaio (Windows XP SP2) notebook w/ a USB modem driver so I can get online anywhere my Samsung i600 Smartphone receives reception from Verizon. I'm running Microsoft Streets and Trips 2005 with the USB GPS receiver on the laptop (for in-car nav). Out of the car, I use a Garmin etrex Legend.
Once I find a cache, I take photos with a Canon Powershot S40 (convenient as it uses AA batteries like the Garmin unit). The Vaio has a slot for the CF memory card from the camera.
With this setup, I can spontaneously decide to do a nearby cache, jump online while in the car to ID a site, tell Microsoft Streets and Trips to nav me to a parking spot nearby, use the etrex Legend to nav the rest of the way on foot, find cache, photograph it, walk back to the car, jump back online and log the trip from the field complete with photos.
How about you?