That won't work. As far as I know. WinCE doesn't support GPX-Files, at least I couldn't get them running.
You can help you with Digger 12 (have a look in the forum, there are serveral links for download) and create your own mca-map-file. This will display a line. But you can't use it for navigation, just for looking.
Put the mca-file to your aother mca-files amd MF will recognize it automaticly (after restart MF)
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