until u get better advice here some comments are:
fat32 for shared between MS and Linux is the way to go
grub can be easily restored to mbr with a live cd such as kanotix or knoppix.
raid gets messy when your drives are not the same as you lose the extra bit.
raid 5 normally is like a raid mirror for 2 drives but with 3 as altho I am sure to start a flame I am not in favour of trying to mix linux with MS with raid.
(2) some questions comments on backup....restore....do you have a dvd burner or cd burner....or a tape to archive or external drive to backup?
if so I suggest the gigabyte recovery is redundant.
alternatives in MS to it would be ghost images...or paragon images. But mixing the image with an attempt to raid...well I would not try it my brain hurts heh heh.
Linux as a free (GPL) imaging found at
www.partimage.org but the last I checked it does not handle xp but can handle fat32 ok.....then there is the linux disk dump with compression command dd
here is a good read if you have the time
http://www.linuxquestions.org/questi...d.php?t=362506