Client monitor/HD thru SD firewire?

I suppose that this has been covered ad nauseum. I'm not sure how to search for this. I'm able to import and edit P2 720pn material on FCP/Mac G5 2x3 GHz Dual-Core Intel Xeon yadda yadda...

Previously, I have been importing DVCPRO50 thru Firewire and monitoring FCP through the Firewire connection. I also have been changing the playback settings in Audio/Video Settings to allow playback through a DVD recorder which worked great for the client monitor.

This apparently doesn't work with DVCPROHD 720pn. I can edit just fine on my Cinema displays, but the Firewire connection will only display a still frame. The audio passes fine but not the video. Any thoughts?
Rich

Another option is using the MXO.

http://www.matrox.com/video/en/products/mxo/

John

MacPro 8-core 2.8GHz 8 GB RAM OS 10.5.4 QT7.5 Kona 3 Dual Cinema 23 ATI Radeon HD 2600 XT
ATTO ExpressSAS R30F RAID Adapter, PDE Enclosure with 8-drive 6TB RAID
24" TV-Logic Monitor
Final Cut Studio 2 (up to date)

Pro Tools HD w SYNC IO, Yamaha DM1000, Millennia Media HV-3C, Neumann U87, Schoeps Mk41 mics, Genelec Monitors, PrimaLT ISDN