The development work below is from January 2001. The link for the .SIS at submarine.nl does not appear to currently work. Here is a link for an untested JPE.zip, containing the JPE.sis. While I like the JPE project, my netBook has been unused for the last two years. It is starting to see some life now [January 2003], but has a lot of other open source projects now to contend with for my time.
You will also need [as mentioned in the readme.txt], a new classes.zip. This is available from the following page.
These are changes to the JPE v0.9b.
All code on this page is covered by the Gnu Public Licence (GPL).
This is the current stable version, v0.9.10.1
This is the current dev version, v0.9.11.4
The original can be found at: www.submarine.nl/data/psion/JPE/index.html. I recommend downloading the .SIS file there and installing JPE. Then replace the jpe.jar with the one here, and download jstyle.jar and the gnu-regexp jar. Then add the two extra jar's to the jpe.txt file's classpath.