Doing something like hooking it up with a suicide cord is asking for absolute shitheaps of trouble. If you are feeding your outlets, you run the very real risk of backfeeding the grid and electrocuting an unfortunate lineman when the power goes out. You've basically got to get the utility to do this for you, as you need a real transfer switch and their explict buy in, as the only safe and correct way to do this is on the utility side of the distribution box. Doing that basically means getting setup to feed back to the grid as far as I've seen anyways.