Eh, that site shows all tablets, it seems. Anyway, yes, you'll want to get a Wacom tablet. Graphire 3 is good. If you can afford a 6x8", which is $199 USD last time I checked, that's great. Intuos 2 is even better (double pressure sensitivity levels, pen tilting and so), but far more expensive.

Here's my personal list of choice, in ascending order of quality:

1: Graphire 3 6x8" (Nice tablet, will cover your needs VERY well. It's accurate and not horribly expensive).
2: Intuos 2 6x8" (Far more pricy. If you can, get an Intuos (1) model, as it's pretty much identical, minus some 4D mouse capabilities. I have one of these).
3: Intuos 2 9x12" (VERY nice tablet, but expensive as hell. I'm definitely going to get one of these some day).

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