I had a dual usb ibook, the lb problem lies aprently with the processor and the large chip next to it. the ibook with a faulty lb won't boot up unless you press really hard on these 2 chips, and maybe it never will. as for the lcd not working it could be a cable, the inverter board or the lcd itself, shouldn;t be hard to find a screen assembly on ebay, though it may not be cheap. just do as mordaskyt said, hook it up and enjoy it or mod it into the back of an inexpensive lcd monitr!

good luck!