The sata doesnt have anything to do with the PSU.
It does if he's wanting to know how to power his SATA drive which is common if you're unfamiliar with SATA.
Most SATA drives have two different ways for power. It can either except the Molex connector that normally powers an IDE Drive, or it has a place for a SATA specific power connector which like they said most modern PSU's have.
Look into the THermaltake 560w PSU, it's what I have. Strong rails, lots of power, includes SATA power cables.
Although like I said, I have a SATA drive and I just plug in a regular 4pin molex connector. You don't plug in BOTH the SATA power and 4pin molex into the drive though because that would fry it. It's either one or the other.