Possible to swap the DVD to a 2nd hard drive

Hello. I have been a huge fan of old laptops and my powerbook 1,67 Ghz with the high resolution display is one of my favorite. Allthrough it is a laptop who is already a decade old, i still love this machine (and also the kids are starting to like old school laptops - Starcraft 1 and Diablo 2).

I also like to add some upgrades for the system. I have here at home a 32 GB IDE SSD who i like to install in the system. But because of the small amount of GB i like to upgrade the storage with a second hard disk. it possible to change the DVD to a second hard disk drive? I have seen different HD carry's for the macbook, but is it possible to install them in an old powerbook?