CrossRoads:
No, you don't need a bootloader.
Once you are set up for the '328 chip,
you select the new board type
Tools:Board
select your programmer
Tools:Programmer
then set the fuses
Tools: Burn Bootloaderand then overwrite the bootloaded
File:Upload Using Programmer.
if you said I do not need bootloader, then why burn bootloader into thee chip ?