The foxuser.dbf and foxuser.fpt are two files that keep the user settings (like screen resolution, etc.). They are automatically created whenever the software is launched. So you can easily delete them. THIS IS NO SPYWARE, but they are 2 files that are created automatically by the programming environment that I use.
I will make sure that in the next version, they are no longer on the desktop. But don't worry, they are totally harmless.
Concerning the link between enclosures and herps:
First, create your enclosures, then go back to the herp screen, you can now assign an enclosure to your herp. If you go back now to the enclosure screen, you will see that if you click on that enclosure, the name of your herp is listed in the listbox.
Freeware Herp Care Software at TheGeckocam.Com