i know that the all nintendo RF cables are the same, and they work with every nintendo system, so i know the power of the system isn't really an issue.  but i was wondering if i could use an RF cable for my gamecube that's not by nintendo.  could i, or would it ruin the system?  i hate taking risks, so please be 100% positive that any old RF cable would do.  i'm sure trying it wouldn't hurt the system, it just wouldn't come out on my tv, but still, i hate taking any risk whatsoever.  thanks in advance!