Keep on pressing <ctrl>+<m> multiple times as the computer is POSTing. As soon as POST is complete, this will bring up the BIOS that you are looking for.
One thing caught my eye. I suggest RAID 1 instead of RAID 0. In RAID 0 (striping) , if one disk fails, ALL data is lost. ore info here: http://en.wikipedia.org/wiki/RAID