Dell T3400

We just received our new T3400's. I ordered the systems withjust 1GB of 667 MHz memory. Then ordered 4GB of 1066MHz memory fromNewegg. Dell did not offer 1066 memory, the fastest option was800MHz. I'm now frustrated to find that the Bios offers verylimited control of the system. Unless I'm missing something, youcan't select memory speed, voltage, or latency options. It'slocked. Am I stuck with 800MHz, or is there a way to get the fullpotential out of this new memory?

Thanks in advance for your time/insight.SolidworksAdministration