Vista with Raid & Ubuntu Triple Boot

#1
I have a Vista 64 bit O/S on a raid 0 setup. Then added an additional SATA drive (No Raid) to attempt a triple boot. Stand alone SATA drive is partitioned in half. Installed Vista 64 on raid drives then Vista 32 on first half of the non raid drive. Dual booted with ease. Then installed Ubuntu on second half of non raid drive. Would not boot, as I had expected. Booted from the Vista disk to get to the repair console comand prompt, ran fixMBR and fixBOOT then rebooted. Got my Vista dual boot back and I am able to boot into either Vista O/S with no trouble. Problem is I can not get to my Ubuntu O/S.
Please help