RE: How do I get the wheel off?
Wow. A lot of discussions for a pretty simple task! fotoman, I would like to add one piece of additional advice. I "refurbished" my wheel a couple of years ago, identical to the pics you posted. To get 30+ years of old varnish, cetol, etc off the spokes and hub I decided to dis-assemble the pieces so they could be sanded/refinished completely and I could get all the gunk off the hub and polish it up a bit. . If you take this approach, figure out a way to number all the pieces for re-assembly. These things did NOT come off an assembly line machined to very close tolerances (!) and a lot of jiggling was necessary to get the individual pieces back in place. Keep the refinishing material off the tenons also.
Mine is on a straight shaft with a tapered key in a slot - if yours is like that, don't lose that key.