can anyone help me get it to the right speed by telling me the path in the bios to increase the Mhz to 800?
Read the MB manual under BIOS setup. Jumperfree config in BIOS is one 'path'. Increasing the system BUS will increase the RAM speed also. ASUS has a forum dedicated directly to the MB. Posting there would reach others with precisely the same MB and familiarity with the different BIOS versions of that board..