Okay, I should clarify this a bit. The SRB as it currently exists is a side booster of the STS system. The thing derived from it which is to fly in 2011-12 is a brand new launcher thing with a new upper stage and a load of unknowns (safety, thrust control, reliability, operational costs, what have you) CLV != SRB The CEV is even more "God knows what that is" A direct reproduction of the Apollo’s CSM? No. (even if we could those very clever folks are either dead or retired) It's supposed to be reusable and be capable of going to ISS, the Moon, Mars, "and beyond"