In that case I wish you the very best of luck. If you were doing anything approaching a decent run I'd strongly advice you to contact a professional printing company but you might be okay with a short run.
Although there's always the chance that once you've found/created the right template, sourced the right thickness of card, found yourself a printer that will do double-sided with ease, found something or someone to cut them out and scored the creases you'll wonder why you ever bothered!
Will you be up for showing off your finished design once it's ready to print? Would be very interested to see what you come up with as I've found designing CD inserts to be something of an experience in the past.