I think you can get lots of usable advices from the guys at syntesizer forums.
Of course you can get the documents and the software at the site of Akai Pro:
http://www.akaipro.com/ewi4000s
And a specialized site with guys who know a lot of windcontrollers is here:
http://windsynth.net/index.html
Those guys developed a connection unit for the WX-series of Yamaha to control every synthesizer with their windcontrollers, the WW-Bat:
http://www.windworksdesign.com/music_wwbat.html
Of course you can get the documents and the software at the site of Akai Pro:
http://www.akaipro.com/ewi4000s
And a specialized site with guys who know a lot of windcontrollers is here:
http://windsynth.net/index.html
Those guys developed a connection unit for the WX-series of Yamaha to control every synthesizer with their windcontrollers, the WW-Bat:
http://www.windworksdesign.com/music_wwbat.html