Okay, I'm back - it's been a long week at work.
I got a new USB stick and put unRAID on it tried to have it boot but got the same problem. I've tried both the front and back USB ports (I've got a Norco 4220 case) with both USB sticks both don't boot automatically. I've attached a few screen shots of the BIOS settings - maybe I missed something? Upon boot, I get this message: "Reboot and Select proper Boot device or insert boot media in selected drive".
At the end of the day, it doesn't matter that much if I can't get this to work - I can get it to boot using F8 and once its running, its fine.