Atari-Midi Archives

Hello, I recently got ahold of a Kawai Spectra synth which I've become
quite attached to. I have been trying to connect it to my PC running
Windows XP. I noticed that some users made available a patch editor
for it that runs on SoundDiver. I then found out SoundDiver is owned
by apple, who actually discontinued the software several years ago. My
first thought was that it might be possible to still obtain a pc
version of sounddiver on the internet somehow, but it seems nearly
impossible. 

I was wondering if there is any other way in which I can use the patch
editor for the Kawai Spectra eventhough it was created to be used with
SoundDiver; is there any new librarian/midi software that can
communicate with my old synthethizer? I don't know about computer
programing or have much experience with sound modules or synths but I
am getting quite confortable with my KC10. Well, hopefully someone
might be able to help me on this. Could any of you share SoundDiver 3
or else point me in the direction of it? 
Perhaps there is a better software that is at least in the market
right now and which I could use to operate and interact with my Kawai
Spectra via Windows XP; any suggestions?

thanks a lot. I really appreciate any help.