How to set mobo for new RAM? PQI/P5NSLI

I just bought some new RAM, but my system won't post, it just beeps at me. I returned the RAM once, thinking it was defective, so the gave me another set and it still didn't work, so it's likely not the RAM's fault.

The mobo is the ASUS P5NSLI with a C2D E6600.

The RAM is PQI25400, 2GB (2x1GB) dual channel.

All of the mobo settings are at default. I don't care about overclocking. I just have no idea what changes I need to make to the BIOS settings to allow the mobo towrk with the RAM.

Any suggestions are greatly appreaciated.

Thanks,
elf