Wheelie,
Congratulations on your new keyboard. Now that you have that 2000, you will need to bookmark
http://psrtutorial.com .
You will find the answer to your question there. There is a whole section on registrations along with sample registrations.
http://psrtutorial.com/Lessons/L_Personalizing/LP_Registrations/lp_registrations.html There is also a whole section on the PSR file system to help you better understand the different kinds of files the PSR recognizes and how you can manipulate them.
http://psrtutorial.com/Lessons/L_FileTypes/l_filetypes.html The 2000, like many keyboards, is a very powerful machine with lots of capability. It will take a long time to really master all the things you'd like to do. But, there's no rush. You can take it just one lesson at a time.
By the way, while the lessons can be very useful, the most visited pages are those that will increase your style library and the PSR Performer's pages where you'll find over 1,000 midi files, most of which were recorded on that very same keyboard you just purchased.