Mike, ya really gotta spend about a week strait readin old threads before you start buyin things. you'll see better ways of doing things, and and see things that wont work. laptop LCD's require a controller card. these start at $150 on ebay and go up, IF you can find them at all there, and IF it is compatible with your pannel. also, i hope your proficient with soldering very small connectors in place, cause you will need to do that as well.
you want to hook a tv signal up to the lcd? well, provided you can get everything hooked up to get the lcd working with your computer, you can get a tv-tuner card for your computer and do things that way. theres a very slim chance that the LCD controller will have composite input as well.
one of the main problems with laptop LCD's is that they are simply not bright enough to see in direct or partially indirect sunlight. if any of the monitors have a brightness rating listed, your looking for something at least 250 nits, 300-400 is better.
long and short of it is, i would recomend relisting that little beauty on ebay and then hangin around the forums for a few weeks. you'll get the hang of things, and figure out what will really do what you want. and sorry, but this little project is gonna cost you ALOT more than $20....