Quote - No idea how to make them children of the foot... For what it's worth, I did try to parent them to the foot

We're talking about the same thing, just that terminology of "parenting X to Y" is not really accurate so I don't say it that way.

There are a lot of tutorials out there, here's one that's pretty concise:

http://artzone.daz3d.com/wiki/doku.php/pub/tutorials/poser/poser-rigging07

You're already done up to step 4.  Probably you have not grouped the model; for your shoe, imo it's simplest to just put all polys in the right shoe into "rFoot" group, and all polys in the left shoe into "lFoot" group.  The tutorial there explains these steps, if you get stuck I'll be around.  You don't need to create a group for the toe since it's an end bone with nothing nearby, and anyway you probably don't need it to bend.  There is more to do, to make sure the toe WON'T bend, but when you get to that point we'll take it from there.

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