I'd also reccomend the biggest, fastest CF card you can afford. I've got a two gigabyte sandisk ultra II, and I never use my one gigabyte card, as it's far more trouble to keep track of two than one.

There is the argument that you shouldn't keep all your eggs in one basket, but I know for me if I only have one card that I only take out to download photos, they're all a lot safer. YMMV.

Matthew