Ok..I got it. After re-checking the website, it says change BIOS to boot from CD/DVD exit and save, insert Gigabyte Utilities disk, select Boot from CD/DVD when given the option and install. I didn't see that the first time. SO..the utilities disk must be bootable.
Of course hitting F12 during boot will also give you the "boot from option", but I will try their method when I get off work. (next week) I work 12hr shifts -7 in a row then I will try on my 7 days off.
It does not say to set aside a "unallocated " partition in those instructions, but I think I will anyway, you can always extend the primary partition later if X-RC 2 doesnt use it.