I will have to try this later after a finished wu. Do you think it will work with an already installed client? I think I will just run the configonly flag and try to set it up.

As for running 2 smp clients, I don't understand why you would want to do that. Running one client maxes all four cores. I have been running the smp client with the quad in my sig for months. I average about 3200 a day.