I know you can get a PCMCIA (Cardbus) SCSI card as I have one that I use on one of my laptops to run the CD-ROM drive. It requires a special cable as the space available to connect to the card is limited. It was supplied with the laptop so I don't know where to source one. Try searching on Novatech or Dabs sites.
Does your peripherals also have a Parallel port connection option?