what is a list of lcd screens i can use? can i use a gameboy advance screen? where are some places i can get some cheap ones?
There is a list of libraries with supported chips on the Playground (look at Graphics LCD): http://arduino.cc/playground/Code/LCD
It might be a good starting point.
Cheap LCDs could be extraced from some old mobile phones (zero cost... :D)
Do you have a project in mind that uses an LCD?
a lcd that reads off the the html of a specific page with only a couple values.