As work progresses, I have decided it was a darn shame previous owners did not take care of the "bones". Under the crappy steel siding (yes, steel - magnets clung to it) was an exterior that was most likely quite lovely once upon a time. Good thing I am not in a "historic area" since I am covering those old bones with vinyl.
The top of the house had white shake siding and the bottom boards were a nice shade of green. Had they been taken care of and painted rather than been poorly covered, the deterioration would not have been nearly so bad.
Sad to say, but through a little research, I have learned that the windows do not quite meet the requirements for the energy tax credit. The two important numbers would have to be < or = .30. One of my numbers is .31 and the other is .32. It's o.k. though. They have to be better than what was there.