I posted this to the GPS & Software forum a couple of days ago, but I suspect that may have a fairly restricted readership.
Anyone who uses the Pocket PC application TomTom Routeplanner may be aware that you can create overlays containing points of interest. I've just knocked up a quick and dirty utility program to convert EasyGPS waypoint data into a format that can be made into an overlay. The file created needs to be converted into an overlay file by means of the utility TomTom provide on their web site. Thus you can carry all your geocache details on your Pocket PC, and view them on a map of the area.
I now have a nice set of geocaches within a 50 mile radius of home on one overlay, plus all the UK trig points an another overlay.
If there's any interest I can email you a copy.