I'm not familiar with the Delorme GPSr, but with GSAK, you can open a PQ and then save it as a GPX file. You could also bypass GSAK by unzipping the PQ file to get the resulting GPX file. You should then be able to copy the file to an SD card, and I assume that your Delorme would be able to read it. Good luck!
"Wildness is a necessity." -- John Muir
"When you go to hide a geocache, think of the reason you are bringing people to that spot. If the only reason is for the geocache, then find a better spot." – briansnat