Wow, really? In that case do yourself a favor and read Lewis's
Screwtape Letters, and follow up with his speeches, collected in
Mere Christianity.
He didn't start out as a Christian apologist, though. In fact, he didn't abandon agnosticism until after his military service in Europe in World War I. If you're interested in his conversion, check out Surprised by Joy.
Ok. But I was just making the statement that I didn't know that Lewis was Christian, or that his works had Christian messages. Do you think that kids or people would get that?