Need help to power a lcd with battery, and change video cord

Hey guys

i'm new to this forum, and i found it on google and it looks like you may be able to help me with this.

I am planning to take this cheap lcd i found on ebay and mount it on my video camera (panasonic dvx100b) And what i need to do is make it portable, in other words, powerd by a battery.

so im wondering what battery i should use and how i will hook it up (its a 12 volt dc)

i'm also wondering how i can hook up a rca video cord so i can plug that into my camera.

here is the auction, cheek it out, there are a bunch of specs on it and pictures to better understand what im talking about.
**broken link removed**

thanks so much if you could help out
-steve