While a PocketPC and particularly a Dell Axim, thanks to its SD/CF slots, removable battery, transflective screen and...price! (buy from affiliate) is a great platform for "moving map" navigation, there might come a time when you're hitting terrain or conditions that could put it in harm's way ;-)
At that point, it might be wiser to switch to a more rugged GPS like the standalone Garmin and Magellan units. The problem is that you don't want to start from scratch and reenter your marks, waypoints, routes, tracks, etc...With advance planning you could do that at home with your desktop computer, but clearly that will be a limiting factor. Also, what happens when you can resume usage of your Dell and want to transfer data entered or logged with a standalone GPS in the "rough"?
The solution comes from the Hobbitleads 2-WAY GPS TO AXIM DATA CABLE that lets you transfer data back and forth between your Dell Axim and a Garmin or Magellan receiver. They claim it's the only bi-directional data cable for the Dell Axim and my research hasn't proved them wrong! It's available for £30.00 (UK) £32.00 (international) and GpsPasSion members get a 10% discount (email me here)
It's really a snap to use, here's a summary: - Tested with my eTrex Legend - Tested with Memory-Map (review) and G7toCE (free utility) - Lets you import and export Marks/Routes/Tracks - now on to the pictures (click to enlarge)!
Conclusion: A very nice design for a reasonable price, a must have if you own a Dell Axim, a Garmin or Magellan GPS and are an "all-terrain" type