These are the cards I was looking at for fw800 and sata.

SATA pcmcia card

FW800 pcmcia card

The enclosures are:
Firewire 800 enclosure - last one in the list

This is IDE to SATA
Sata enclosure

For the hard drive I would use something like this because it's SATA throughout the chain.:
SATA Hard drive enclosure

This Plextor drive is part of the reason I brought up SATA:
Plextor Announcement

Thanks