Not a problem. SATA doesn't get BIOS from CMOS so you might have to load a driver though. Do you have a sufficient power supply?
I have an ASUS P5VD1-X motherboard Rev 1.xx
Bus Clock: 200 megahertz
BIOS: American Megatrends Inc. 080012 12/06/2005
I would like to add another hard drive or two. I already have 2 hard drives, a dvd burner, and a cd burner installed, thus using up all the ide channels on the board. I don't want to buy a PCI slot ide controller in order to add more drives unless I have to. So I am wondering if I can make use of the SATA controllers on the board at the same time as the ide primary and secondary channels.