Soyo TISU BIOS settings

I have the Soyo TISU MB which according to the manual can be set to
run the memory at 133mhz and the FSB at 100mhz. When I enter the BIOS
the option to set the memory at 133 is missing. Any TISU users out
there know what settings are necessary to make this happen. I am
running the latest BIOS available, with PC133 SDRAM. I have tried both
2 and 3 sticks single sided of RAM. Also the CPU is a Celeron 1100
tualatin.

Thanks
Gary