EDrummer's Partner:
http://edrum.for.free.fr/edp/
I found out about this after subscribing to the natural sound website forum (home of the incredible NS Kit).
The author has built this software primarily for drummers who use digital drum kits, such as V-Drums (or trigger-to-MIDI devices), but I would imagine that it could be used by us keyboard-wielders too.
Can't say much about it, as I have not tried this out as yet, but it seems to offer great control over 'natural drumming parameters' (my own rather inept phrase), such as hi-hat openness and ride cymbal position.
Royston
edit - I think it's also well worth checking out the NS site for interesting news regarding NS Kit7 development:
http://www.natural-studio.co.uk/
<font size=-1>[ This Message was edited by: Counterparts on 2004-07-29 07:11 ]</font>