George, as you found out when you tested it, connecting to the box accoplishes nothing since the box is not grounded. Basicly, there are two options that would allow you to install grounding type outlets. The first, and easiest, is to protect the circuit with a GFCI, either with an outlet style GFCI installed at the first outlet in the circuit with the rest of the outlets in the circuit fed from the GFCI's load side, or with a GFCI breaker (much more expensive) in place of the normal breaker. The grounding type outlets must then be labled: "GFCI protected" and "No Equipment Ground". The second option is to supply a ground. This does not have to mean rewiring; the NEC allows a separate grounding conductor to be run as long as it is protected and connected to an appropriate place on your grounding electrode system, eg. the panels ground block. Note: you cannot just connect to any convienient piece of water pipe. Check on local amendments to the NEC wich might be relevant first though.