Casio CZ/ VZ/ FZ - Pro Series

Hi.  I've just dusted off my old CZ-5000 and brought it into my MIDI 
setup (currently a PC with Yamaha DB50XG, USB-MIDI controller, Roland 
FP-3 Digital Piano).  Unfortunately I'm not sure what I should do to 
get the most out of my old synth.  I've see files with programming 
patches in, but dont know how to get these into the synth.

I got my synth about 18 years ago (can it be that long?!) as a school 
kid.  It was amazing at the time, but since then I've forgotten about 
it until now.  I'm sure it can bring something to my setup, if only I 
can make the best use from it.  I've also got the Casio drum machine 
(was it a RZ-1?) - which I guess could also come in useful?

Any advice/comments/pointers for a newbie?  It would be most welcome!

Many thanks,
    Pete.