I've been struggling with this sequence.

I keyed the red stopsign that hits the boot, and then tried to have dynamics and gravity do the rest of the movement wih the boot. Sounds simple. Swing, whack, boot swings up. Of course maya thinks its a stupid idea.
Where do I find a hinge constraint again? Maybehaps I can figure it out...

Also, any tips on getting the cogs to co-operate? I'll probably have to key the first movement, but I can't get the yellow cog to respond to the red one at all. It's just going to be something simple, but I can't seem to see it. Anybody know where I can find a good tutorial for animating cogs?