Is it possible to turn my performa 550's monitor into....almost a TV? I need to get the monitor to recognize A/V plugs.

I used my LC 580 as a TV for while. You need Apple Video Player. Turn to the AV channel and there you go. I used a VCR as a TV tuner. The only thing I didn't like was the loud fan in my Mac, it was kind of distracting when watching at low volumes. Hope this helps.
walky_talky20

You'll also need the video input card if your 550 doesn't have one installed