I've looked around and found several accounts of people with your board useing Ctrl-F1 to enable advanced settings, sorry to harp on about it but I really think we're not going to get any further until we unlock the settings.
I'm sure you've done this already but humor me, enter your BIOS, Press Ctrl-F1 and then look into every menu item checking to see if there are extra options that wern't there before.. You may need to take your CPU setting off auto to manual to get all the options visable.
If this definately doesn't work then we need to go back to the drawing board. Upgrading the BIOS may be an option using the @bios utility, its quite good.
Intel core I7 920
6GB OCZ platinum 1600
Samsung 1TB F1 Spinpoint
Samsung SM2443BW 24"