Man.. that board should get the award for crappiest manual. No explanation about the BIOS at all... However, the manual refers to overclocking at times (like under the "Spread Spectrum" section), so I think the board should be clockable.
If the board has any overclock functions, they should be accessible in the "Advanced BIOS Features" menu in the BIOS. Look for anything that changes the menu layout if you change it from AUTO to MANUAL. In the BIOS of my ASUS board, I don't see anything either at first glance. In the BIOS there is an entry named "Jumperfree configuration", which is AUTO by default. When I set that to MANUAL, the menu changes, and I get all options I need (FSB for the CPU, volts, etc.). The RAM settings are under the CHIPSET option in the BIOS.
Again, these are settings in my BIOS. Poke around a little, see if you can find anything that'll show you the good stuff when you set it manual.
Good luck. (If you can't figure it out, maybe you could post a screenshot of the "Advanced BIOS Features" menu?)
Welcome to the forum btw