A video out lead should have come with it – it did with all of my Macs. Depending on the inputs on your Plasma, you could use it as a simple monitor – mine can, but I don’t really bother with it, using a computer to play videos is too awkward when you have a perfectly good HD recorder/player with a USB2 port. On those rare occasions when I need to I will copy the video to a thumb drive and play it from there.