If you want to play with the advanced settings on the Asus motherboard (there are plenty of them), you'll have to enter the Advanced screen, as shown below. In the JumperFree Configuration menu, you can change the CPU, Memory and PCI-E frequencies, select between overclocking profiles, change the voltage for the CPU, Memory, etc.

Advanced Main Screen

JumperFree Configuration

Overclock Profiles

Memory Frequency

PCI-E Frequency

Memory Voltage

CPU Voltage

CPU Configuration

Chipset Setup

From the OnBoard Devices Configuration menu you can enable or disable the LAN, Firewire, SATA, etc.

OnBoard Devices Configuration

USB Configuration

Detailed information about each setting in the BIOS can be found in the board's manual. We highly recommend you to read it first, before proceeding with any overclocking attempts.