Todd;
I didn't have to look up anything to give those answers. It is enough to know any physics and think through the problem for yourself.
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Todd, you are a liar. You do not know enough physics to answer all those questions off the top of your head. Nor do I. But the people at MIT, Caltech, Woods Hole, and Scripps do. And they all say that we will be seeing increasing heat, and increasing effects from that heat. I'll go with what they state, rather than what an ananomous poster on the internet claims.
And the CO2 does not work in the manner that you stated. If you really wish to learn how it works, it is presented in this paper from the American Institute of Physics, a far better referance than a poster on the internet.
The Carbon Dioxide Greenhouse Effect