I now have the wheels and sliders de-greased, cleaned, and polished via a wire wheel in the Dremel.
I didn't have to do a whole lot to the superstructure... just wipe off dust and what have you. It cleaned up nice!
Now, I wait for the track bundle to arrive. I ended up with a bit more track (okay, a lot more track) than I actually needed, but the bundle had everything I needed (Marx straights, Marx curves, a Marx lock-on), along with other "goodies" (like a Marx 90 degree X-ing), so I bid and ended up getting it.
Still tempted to start seriously watching for a Lionel Baldwin Hudson. (Minor inconvenience: I've about got my monthly hobby allowance spent... so it would need to be a really good deal!)
All fer this 'un!
Andre