Raptor22,
I think that we can get you into an acceptable RCA cable for about $100.
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Just kidding! It won't cost much at all. Should be less than $5, maybe $10 if your options are limited (or if you need a long cable). Back in post #8, I gave a link to
this cable as just an example. I doubt that you want to wait for something to be shipped, though!
You can use any cable that has RCA jacks on each end. Any cable. Companies sell "subwoofer" cables, which would work fine. If you have a Radio Shack (or Target, or Home Depot, etc.), you can also buy a composite video cable (that's just a single cable with RCA jacks at both ends). Video cables typically have more shielding than regular audio cables, so I recommend video cables if you're going to choose between the two.
What sorts of stores do you have in the area? Also, are you sure that you don't have an RCA cable around somewhere? Now that you know that you can use anything, perhaps you've got something there that you can use for now. I think that one from Monoprice looks kinda nice if you wanted to "upgrade."
Adam
EDIT: Ah, I see that Sheep got you all hooked up while I was typing. Good man.