Hi, I need help

My configuration is:

E6600 / XP 120
P5WDH
Corsair XMS2 1066 2gb http://www.newegg.com/Product/Produc...82E16820145033
2x320gb Seagate sata 2
7900GT
Enermax 535w

The problem is with the memory or mother. I can't make 1000MHz 5 5 5 15 2T or more.

Have solution ?