Christians preferably, but anyone familiar with Narnia allegory in "The Last Battle" -- what's your take here?

I would have to agree with writersrule that I have never interpreted Tash to be the devil when reading the series. I took it to imply that the religion following Tash was like Hinduism or any other religion and the religion following Aslan was christianity. With that it mind, I believe he was trying to say that those following Tash were not wrong in their belief just because they were following a god who was not Aslan, or God. I think he was trying to say there is a bit of truth in every religion (though Christianity being correct for the most part) and that just because a person follows a different religion does not mean that they are going to be punished for it since they still believed in a god which possessed the same traits as Aslan and the followers, I am uming, were good, faithful people, hence the reason he said service done to Tash he accounts as service done to him. I know this isn't a very popular belief for many Christians so I think many tend to disagree with C.S. Lewis on this point. I myself am a Christian but I take a broader view on many subjects and I personally have a hard time believing all the other religions in the world besides Christianity are completely wrong (not to say all are right either).