mfop2 again

gme.jp: How to make a moblog sidebar in MovableType

How to make a moblog sidebar in MovableType
There is already one tutorial linked to at Mfop2 that documents a way to make a sidebar that displays moblog pictures in your main blog using PHP. I've found another way that is conceptually very similar, but uses a Movable Type plugin instead and may even be a bit simpler. I will assume that you've read the tutorial linked to above and keep my explanation to the bare bones.