First of all, you will need a JN5 course to convert.
If you already own JN5 then you probably have many courses sitting
on your hard drive that you want to convert and play in GBC.
If this is the case, you can skip ahead to the next
step.
If you do not have any JN5 courses, then check out
the download guide for help on getting some for conversion.
The first thing you need to do is make sure that all
of the course's files are in one directory,
(jnc, hol, pcx, and ini extensions).
Once this is done, open up the course converter that
was installed with Golden Bear Challenge.
Now click on the 'open' icon near the top of the
program, or chose 'open' from the 'file' menu.
Find the main course file with the jnc extension
and open it up.
Now from the 'file' menu chose 'save as JNGBC playable'.
The converter should default to your GBC courses
directory, so all you need to do is hit the 'save' button.
Make sure you specify that it saves as a .course
file, or GBC will not read or load the file properly.
The conversion should take approximately 60 seconds,
depending on the size of the course.
The next time you load up Golden Bear Challenge
your new course should be available from the course selection menu.