Ok... so I tried doing 12*200mhz on my DLT3C 1800+ on default voltage and my computer went black directly after posting. After turning off the power to my power supply and trying again, I got some wierd error msg that said something like "Inappropriate CPU..." I turned it off again, and then I lowered the multiplier to "10" and it works now. Did I get that msg because my CPU voltage was too low? or is it something more serious? I personally have never seen that message before...