Help me set my RAM to correct timings please :)

I have 2GB of Corsair T W I N 2 X 2 0 4 8 - 6 4 0 0 C 4 D H X 800mhz ram, but CPU-Z says thats its CAS5 at 5-5-5-18

Now i was told to manually enter the correct timings but im a complete newb.

Here is my BIOS options (Asus P5Q Pro)

Ai Overclock tweaker
CPU Ration setting
FSB strap to north bridge
DRAM Frequency
DRAM Timing Control
1st info: 5-5-5-18-3-42-6-3
2nd info: 8-3-5-4-6-4-6
3rd info: 15-4-1-6-6
DRAM Static Read control
DRAM read training
Mem OC Charger
AI Clock twister
AI transaction booster
DRAM Voltage

Here is spec sheet http://www.corsair.com/_datasheets/T...-6400C4DHX.pdf

What do i put for each option please?