I have an old, non-functioning Mac Book (the first Intel version) and was wondering if I could use the display with an Arduino?
Utilizing a panel from a newer computer, you need a LVDS transmitter circuit, and a CPU or graphics controller that can pump out data at a rate between 100 Mbit/s and 500 Mbit/s. (it depends of the resolution, the panel in an Intel Macbook is 1440x900 pixels)
This is impossible with an Arduino. Even an ARM processor will struggle with this.
Sell the monitor and buy somehing you can use for the money :-)