Hiya Ton!
> Thank you for your extensive reply. Your 'Sorry, I couldn't be of more help' is absolutely not at order :-)
Heh, I'm glad, thanks. :) The gist is that I don't know of any standalone hardware arpeggiators, but it should be possible to build one. I think in general MIDI doesn't lend itself too well to a modular approach, but an arpeggiator would be a (perhaps overlooked) exception to that rule.
> I was just curious about your way of making electronic music.
Oh, well in that case I'd advise watching the videos I've put up over at
http://www.youtube.com/playlist list=PL84F88841E355749B
which are designed specifically to show people how I make music. :D
All the best,
Zoë.