you didnt need to extract them from the cdi,however if you are having problems like me burning the cdi it would be best to convert it to nero's nrg and burn them with nero 6,which is REALLY easy to do,just google search for a trial copy of nero 6,find a cd key for it,open it,click on images burn or something and then select the image you wanna burn.
better do it at the slowest speed for it not to screw up
