Is this cd drive/pcmcia interface in question an actual Amiga specific product? If it is then as soon as you plug in the pcmcia card, you may get a disk icon that appears and you may be able to just open it up and click on the driver inside. If so, then after that you'll need to download a cdrom file system such as amicdfs from aminet:
http://aminet.net/package/disk/cdrom/amicdfs240If it's not an amiga specific product, then I'm quite sure that you'll never get it to work on your amiga.
Personally I use a squirrel scsi interface with an external scsi cd-rom. That plugs into the pcmcia card slot....you don't have one of those do you?
Maybe you have the Zappo cdrom drive? In which case it appears you can download the drivers in dms format here: (called "zappoinstall", and "zappoinstall2")
http://www.l8r.net/install/hdc.htmlHope that helped.
