Hi I have a c2d black macbook here that had a sugary drink spilled on it(not mine and I didn't do the spilling just trying to help this also happened a while back so the machine is definately dry, he initially tried to turn it back on right away). The machine will boot but just shows the question mark folder. The dvd drive try's to read the install dvd but fails. So I was wondering how I could go about setting this machine to boot from an external drive? Essentially how I could get a macbook image and set a drive up to boot(all I have are usb external drives). All we have at the house is an al 24" iMac.