There must be something simple I'm missing ...
I used unetbooting to create a bootable USB stick containing Unbuntu 12.04 (since it's too large to fit on CD).
Then, I went into Advanced BIOS options to set it to boot from USB. But, instead of one USB option, I found several:
-- USB-Floppy
-- USB-CD ROM
-- USB HDD
I tried setting the BIOS to each one, and none of them worked.
The only one that came close was USB HDD, but when it tried that is said Operating System Not Found.
So, is there no way to boot from USB on this motherboard?