I am not a trained IT person but have taught myself over the years so please excuse any ignorance. Have you found a solution yet? I have the same problem at my school where I setup a iMac Lab with 15 clients connecting wirelessly to the teacher iMac/server through network logins. You are fortunate to have the fiber channel storage. I found a possible solution at:
http://www.youtube.com/watch?v=iYKIOql9BXg
On iMovie 10 and Network Drives - Alex Zheng
but have not had a chance to try them yet.
Good luck and please let me know how it works out for you.
