The DVI is not a video output. It it used to mirror your MBP or attach a second computer monitor. To properly setup your video output, you need to connect a DV camera/deck via FW and take the video output (s-video or composite) and connect that to any TV/LCD/Plasma video input.
The Matrox MXO will allow you to take the DVI output from your MBP and display it on your Sharp LCD.
Steve Eisen
Eisen Video Productions
Director-At-Large
Chicago Final Cut Pro Users Group