Wrong timing????

Hi,

I have a Asus P4P800 mobo with a Pentium 4 3.0GHz on it.
Now I put in Corsair TWINX1024-3200C2 2 x 512MB DDR PC400 TWINX Dual-Channel Memory sticks
and sometimes I get a blue screen.
I was told that that the "timing" might be wrong.
How can I change that and what would I change it to?

Greetz

Willi

its in the bios and you can change it to SPD to use the manufacturer's settings. it will hurt performance a little since the faster the timings, the better the memory bandwith, but if its causing instability you prolly want to loosen them. what timings are you running at what speed and what voltage?