I troubleshot this problem last night for about 3 more hours and solved it!!!!!, The whole time I was connected via 6-pin firewire to the front-side port of my G5, apparrently the G5 cannot capture video through the front side(I know it shocked me too.) Anyhow, I disconnected from the from the front side firewire port and connected to the rear side fire wire port instead and “Viola!” I now have preview mode enabled in final cut pro 5. I know you guys are probably wondering, “Well buddy, it sounds like your front-side firewire port is fried…” Actually. No….I connected every kind of thing besides video cameras and video decks and I had no problems, My Ipod 60GB updates just fine through there, My G-raid hard drive works fine through there also….So unless I only managed to “half-fry” the front side firewire port, it seems that the G5 and Final Cut Pro 5 are picky about which port you capture from. I hope this information solves some of your problems guys. “Peace and a Happy New Year to all of you!” -Indigo