Use this method to register ABCpdf and install a trial license
if no license is installed.
You should never need to call this method as both the process of
installing and the process of running the PDFSettings application
will automatically register ABCpdf.
If for some reason the registration fails, all you need to do is
run the PDFSettings application as Administrator.
Part of registration includes setting up ABCpdf as an event
source for the Windows Event Log. However this can only be done
when running as Administrator. If you do not have Administrator
rights then events can be logged but the text associated with them
will be tagged "The description for Event ID 4096 from source
ABCpdf cannot be found."