The full story on my experience is
here
Well, just as you said, Windows picked up the SATA 3.0 port and installed the default driver for it. I had to download and install the NEC USB 3.0 drivers for the card to get that up and running. Transferring 1.04TB of data over USB 3.0 took a little less than 3 hours and averaged 115 MB/sec or better on a WD Green 2TB drive.
I will be getting a Crucial C300 256GB SSD (OMFG I can't wait!!!!) in the mail today, so I will also be able to test this card out with that drive attached in the very near future (hopefully tonight) as well.
My experience with upgrading my laptop to an 80GB Intel SSD was amazing, so I can't wait to get this thing in my desktop. I use around 130-140GB of storage at any given time, so I decided against the Intel 160GB drive even thought it probably would've been my first choice except for the limited capacity. 256GB should be plenty roomy though, as I've never been anywhere near out of space with my 300GB Velociraptor. After this upgrade, I don't think there is anything cost effective I could do to make my rig any faster.