Sounds like fun. I finally got all of my ungrounded circuits grounded last month. It only took 5 years. When I first baught this place, a wire run run out of the box in the basement, there would be a tape splice, then those two wires would splice, and so on, with nothing more than tape. I had numourous runs of 14 gauge wire on 20 amp breakers.
My first year here I just put all the splices in metal j boxes and any 14 gauge circuit on 15 amp breakers. This December I finally got everything upgraded to grounded 12 gauge wire. Cleaned it all up real nice. One circuit at a time.