Thanks RW. I didn't explain myself very well (maybe I need to look at things a little differently too!).

I only have the one keyboard, so to change patches I have to do some pretty serious navigatation with cursor keys. So I thought I would use my PC to give me random access to any patch. I'm not doing any MIDI recording with it just yet, so the trasmit from the S03 isn't an issue (yet anyway).