I don't think it's possible.
But you can get external CD-ROM drive enclosures...
You can get external enclosures with support USB and firewire, for Hard Drives (3.5" & 2.5") and Optical Drives (5.25").
Here's a fancy one...
You simply open it up, place the drive inside and connect the molex (power) and IDE cable to the drive.
They do require an external power source however, meaning you have power through a wall socket.