It won't be the card slot in the side as that will be for the PCMCIA cards. It will be under a panel on the bottom of the laptop.... Should be a small 2.5" drive.

I actually have a Toshiba 2.5" lappy drive here on my desk - came out of my piece of shit lappy when the mobo died. It's a shit drive, only 2gig or something horrendously crap like that, but it's yours for nowt if you want it.....