The registration information will be saved in a file in the
folder that JUMP is installed in. If you used the default
installation, this is C:\Program
Files\JUMP. The file is called RegInfo.inf.

You should copy this file to a floppy disk or other backup
medium. If it should be necessary to reinstall the program in the
future, simply copy this file back into the JUMP program folder to
reestablish your registered status.