>Also, this is a two layer board: the top layer traces are in the component layer, and the bottom layer traces are in the >solder layer. Should I place the ground plane in the solder layer as well? Or should I put it in the GND layer to >differentiate it from the traces on the bottom of the board?
>And one last thing: Some of the vias have rectangular copper bits around them, presumably to catch more solder and >create a little heat sink (just a guess: I really don't know). So far, I've just been placing vias and drawing the rectangular >copper sections by hand: is there a better way?
>Thanks much,
>Jeremy