Pci Sata Raid Controller Drivers PCI VT6421A Sata Controller?

PCI VT6421A Sata Controller? - pci sata raid controller drivers

Hello, I bought a PCI VT6421A chipset inorder an additional SATA hard drive to my computer, instant messaging with Windows Vista Ulitmate, and add after you download and install the latest drivers from the VIA website. I went to the device that data has already, it will not appear on my computer, use, contain, I checked in Disk Management, are necessary to assign a drive letter, and there is nothing. However, there is a software called RAID-V and provides the
Unity, but there is no way to explore. Please help

(in the Windows boot no BIOS for the card shown).

Thanks