I strongly recommend that you don’t.
PRPEE, I believe, was not made for general usage, but rather towards the specific purposes of its creator. As a result, it doesn’t always produce the expected results.
We’ve had quite a few threads pop up as a result of people finding PRPEE, having trouble with it, and so coming here for help, as I recall.
If you want to export to egg/bam, I’d suggest trying Maxwell175’s port of YABEE instead.
But more generally, I have an “exporting from Blender” quick-reference thread, which may give you some leads to investigate (including the above-mentioned port by Maxwell175)–you should find it here: