Stream video to Xbox 360 from AExtreme & HD?

I have a WD drive connected via USB to my Airport Extreme, which is hard wired to my Xbox 360. What I'd like to do is open up video library on the 360, select the HD connected to the Airport and be able to stream the video content stored on the HD.

Any ideas if this is possible? According to the Airport documentation any connected HD will be shared on the network and should be seen by the 360, but it's not..

Cheers.

You'll need a program like Playback to do so. It even shares my networked drive. It's not free but it works surprisingly well.

Thanks I'll check it out.