hi coltenford
welcome to the forums
Dunno what your electronics experience is like, but what you have planned is not a simple project
you are going to need a processor with a USB interface, and one that can drive a graphics adaptor that will suit the LCD display.
Does the LCD display currently have any specific video input compatability
that is ... when you say already assembled .... what do you mean ?
but just a hint, unless you are a serious electronics engineer, this is likely to be way out of your league
Dave