Hello Argento. Roger is very quick and resourceful. So if you want to keep up with him you have to learn from him.
BTW. my version which is the latest has MS GS Wavetable Synth(open) as the default for MIDI Output and no other options. However I can put up with the sound on my PC.
On another note, I see you have the PSR Ew410. I have the same(76key). I am impressed on your eagerness to exploit it. I had no knowledge of what an arranger keyboard can do. I used mine the best I knew how and very happy with it. Believe it or not, I still have my PSR E423 and will not let iether of them go as they both have a very good place in the way I enjoy my music. I did go to the SX700 back in october and you will not believe this. I was ready to send it back after two weeks as I could not justify the money for what I though the pain of getting it to sound like I wanted it was going to be. Then I found this forum and as you may already know it is a God send with wonderful helpful people and soo much information that I have spent almost 3 months, getting to know my keyboard enough to exploit all my songs with all the styles, pads and regits that I have been finding. This is such a reward for me NOW with endless hours of challenges and pleasure. I have not even scratched the surface yet.
Your determination, has inspired me to go back to my EW410 and try to exploit it where possible as well. .
Thanks for your feedback. Enjoy. All the best! dom