if I remember correctly digidesign recommend a swann pcmcia firewire card I've got one somewhere that I used to use with my old thinkpad before I killed it and went macbook and it worked well with my 002
I think these can be had pretty cheaply if you can find them - I think I paid 25 quid or so, years ago and can't remember where from
if your current hard drive isn't firewire then I'd consider using that just for backup
if you can get an interface that'll let you daisy chain firewire devices (I'm not sure all do)