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There are card that will work, but they aren't cheap. They aren't THAT expensive, either, but stock they're around $110 low end, as far as I've been able to find. Your other option is to either flash a PC card or buy a flashed one from someone who does that; there are a couple places to find more info on that, strangedogs' and cubeowner's forums are both good sources of info and people.

But yeah, that converter should work, I've never tried one of them before but at $.99 it's worth a shot. Whatever you choose, keep that baby running! Cubes are awesome...
 
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