I just put my new computer together and I was wondering if I needed to change anything in the BIOS to get the full speed out of my RAM.  I've seen motherboards say "Memory Standard:  DDR3 1800(O.C.)/DDR3 1600(O.C), etc".  But the motherboard I have just says "Memory Standard: DDR3 1800".  So if I put 2 sticks of OCZ Reaper DDR3 1600 onto the motherboard I wont have to overclock for it operate at 1600?

I don't think you would have to. I'm pretty sure it will just auto detect the ram settings and it will go from there. What processor are you putting in there?

Q6600, which is currently overclocked @ 3.0Ghz.

Actually, you might need to overclock, for memory speed depends on it.