taking apart a slot-loader is not that hard actually, if you're a detail-oriented and careful person, a couple of screwdrivers is all you'll need. Getting into the CD drive itself is a bit tough, and i would not recommend that, but the metal housing has plenty of holes that you can use to slide the quarter around (if indeed it is inside the housing). I would NOT try fishing it out with a wire or anything, you are likely to damage your computer, and it won't come out anyway (the quarter would have dropped down a bit, so it needs to be lifted carefully to just the right angle).
if you'd like personal help in taking this apart, feel free to email me. i haven't taken one apart in a while, but i have certainly got experience.
best of luck--
paul
edit: clarity