In this one, both 5V and 12V are base on National Semi chips.
The 5V POL is base on National Semi LM2678-5. The only different between this chip and the Maxim chip is that different inductor 22uH vs 47uH. This design was use in the 5V rail for the Proggy 4.0 (I think).
The 12V is the same as the previous post.
If there is interest, I will upload the PCB (pdf) for both.
Don't ask me to make one and sale. I don't have a tool and time to do it. You have to get all the part and etch your own PCB.