I have splashed out on the elite version of PC coach. Some of the additional functionality is better, but the software is still sub-windows standard. The good thing about the elite version is the greater ability to create your own workout schedules, I've created a few workouts but they need a bit of fine tuning. I have been in contact with their support desk and it isn't too bad, I get the hint of techieness so there might be hope for getting the location of those allusive data files. I have got a list of the data marcos stored in the data file, but I think you will be extremmely luckly to get them to explain how to translate the download as it isn't in their interest.
As yet you are the only person to mention the software, I can't believe we are the only two people sad enough to download these files, hopefully someone else will pick up the thread as well.