ASUS/ WDD Raid Help

I just finished my sandybridge build and I already loaded up Windows 7 Professional 64bit and I am trying to configure my 2 http://www.newegg.com/Product/Product.aspx?Item=N82E168... to a RAID 1 set up. I set the bios to run them in RAID and then I entered the Intel Rapid Storage Technology Option ROM utility to try and properly configure my RAID volume. The utility recognizes both HDD and calls them "Non-Raid Disk", and when I go to configure my RAID 1, the "Select Devices" option is not highlighted. Since it is not highlighted, I cannot choose the devices to configure my RAID volume. How do I fix this? Did I install the OS too soon? Also here is my motherboard: http://www.newegg.com/Product/Product.aspx?Item=N82E168.... If any more info is required please let me know.