I have to go with dave on this one. Electricity in the amounts you're dealing with is not something that you want to have an accident with. Call an electrician, but remember to check to make sure they aren't charging a lot because they know you have a huge problem on your hands. Even if you did feel up to re-wiring it yourself, in some states (PA at least) its technically illegal to install or rewire any electrical circuits unless you hold a state certification.