your bios is likely to go to raid drive and raid drive then linux drive?
grub sees raid as ONE drive so to confirm see my trouble shooter
http://www.linuxquestions.org/questi...postid=1413211
type
root (hd AND PRESS TAB to output all the hd types grub can find
if I am right it will only find hd0 (raid drives 1 and 2) and hd1 your linux
then boot into linux and amend your /boot/grub/menu.lst to change that hd NUMBER for linux
btw I am assuming grub is on the same drive as suse linux?
but grub can go on all 3 drives.
It is probably better that you change to bios boot to suse drive amend the menu to change hd NUMBERS and do the same for MS to hd1