Rigging stretches my model Totally new to Blender and I am stuck here.  I rigged my model with an armature by going into object mode, clicking the model, and then shift clicking the bones.  Then pressing Ctrl-A, and selecting automatic weights...It connects to my model, but when I try to move one of the bones, it basically picks a point and will move that, but not the rest of the model.  I'm sure I'm doing something basic, but I have researched a bunch and can't seem to find the answer.  Can someone help me?  Here's a screenshot.
Thanks!
Are you using an unapplied Skin modifier, right?

So the "real mesh", the one who receive the automatic weights from the armature it's actually made of a bunch of vertices, the ones that they are moved. The problem is all here: the vertices created by the skin modifier aren't affected by the armature because they don't really exist yet.

You can try to move the skin modifier to the bottom of the list, so it will occour after the armature deformation, but to get nice an smooth deformations, you'll have to provide more "real" vertices to the mesh. You can for example subdifide your skeleton or apply the skin modifier.