If you are not up it then don't start, it is a tedious job to do this especially with the new mobo's.
If you really want to do it then just take out a multi meter and trace back from the nand to the vias.
Best would be to take a picture, print it and write down the Infectus letters next to the vias you need.
I just take out the complete nand and put it on a special wii mobo I have now at home. And then flash the whole thing. Much easier then getting the infectus hooked up to each bricked wii everytime