If you want to be able to edit HD I suggest going thru an authorized Apple Pro Video reseller and save yourself the hassle of doing it yourself. I work for Applied Video Technolgies if your in south east PA and we have built many FCP based high def systems for clients. Others you might want to check out if not near us would be Promax. As for the Kona 2 board, our clients who have it love it and can’t wait for FCP 5.0 to come out so that they can work in real-time HD with it.
Damon
Advanced Systems Integration
Applied Video Technology
http://www.appliedvideo.com
Apple Pro Video Technican
Avid ACSR: Windows