BTW your unpainted basement walls look like mine, even that window.
I've been wanting to paint the walls since I moved in 13 years ago to
brighten things up.
What paint did you use, and do you recommend it?

Its not paint, it Throroseal. I buy the 5 gallon buckets of powder at
HD. You mix with water and use a masonry brush. Leaves a nice stucco
type of finish and seals the walls pretty good. I'm framing out the
walls and sheetrocking.

I just checked the specs on my Trane furnace and it actually calls for
a 4" vent, but they installed some kind of limit switch at the output
and used a 6" vent.

http://picasaweb.google.com/mikerock...eat=directlink

I really did not want to start breaking up the cement to move the
ducts. Maybe there is a reason why the previous owners could not put
the HW heater duct above the furnace duct. If the 6" duct is
oversized, perhaps that will allow me to tie in the HW heater.