i have a question for all of you out there. it might be a stupid one but i would like to know. i have a dual 2 ghz powermac with the 16x superdrive. would it be possible (in the future) to take out the old drive and install a new one? would it be possible with the blu ray drives or is the superdrive in the computer permanently? thanks for the help. and sorry if this has been posted before or anything...i did a forum search and couldnt find it. thanks!