How about the fact that there is no drive currently in production that can even deliver "SATA-I" (which is a misnomer, it's really SATA150) speeds anyway, so who gives a crap. Technically ATA133 is more than enough. I do love all the hype though.
Quoted for truth. Even ATA100 could handle a Raptor just fine, I don't see why people get so hung up on SATA150 vs. SATA300, when both are overkill for a single drive. Also, I'm not sure where people keep getting that there's a "SATA-II", when there definitely isn't.
Just plug it in, if it works, you're good.