Hey everyone, great news!
I have created a graphical interface to the Data Decoder: http://zeodecoderview.sourceforge.net/
Basically it is a java program that does the following:
1. Allows you to choose a directory to save data to (easily separate multiple users to)
2. Loads, parses, and saves a dat file into individual xml files representing each night
3. Uses these xml files to allow you to easily navigate between different nights
4. You can then view each nights data in much the same way as the nightly report option on the myzeo website
It is in a very early alpha stage. I am sure there are bugs hidden away in it, but I couldn't wait to let everyone give it a try. Let me know if you have any issues or suggestions.