I guess you've waited for this part long enough, so here goes. Let's start with the voltage settings.
Please remember that 1.85 V is as high as you can go here. A normal Athlon/Thunderbird comes with 1.7 V core voltage, the Athlon 1000 with 1.75 V by default. Durons only require 1.5 V, but for overclocking you will definitely have to raise the voltage. All SocketA processors survive the 1.85 V, but you better ensure top-notch cooling.