Into the Wardrobe

At the end of this book when they leave the R.(dont know how to spell that mouse's name)at the end of the world, wat was the end of the world symbolize?(if it symbolizes anything at all)

I think you might want to take note that The Chronicles of Narnia are not meant to be taken as allegories, so therefore, people/places/events aren't necessarily intended to symbolise/represent anything.

Although...just an idea, I suppose Reepicheep going to the world's end and to Aslan's Country could could be a bit reminiscent of Elijah's going into heaven in a firey chariot - just a thought. ;)

Well, you might want to read several of the entries under "Papers", especially "Narnia and the Severn Deadly Sins", which is quite good. In it the author postullates that Lewis meant each of the 7 books to represent one of the classic sins, with Greed being the one assigned to the Voyage.
Still, he does not discuss the character of Reepicheep specifically.

There is also "A Companion to Narnia" by Paul Ford which you might consult (if you can get a copy) and "The C S Lewis Reader's Encyclopedia" edited by Schultz and West. Both of these are excellent references and good reading... one of them, I think, says that the Voyage is supposed to represent the Christian journey and that Reepicheep is supposed to represent the ideal Christian knight -- loyal, valiant, courteous, and kind. His ending (paddling the boat over the horizon to Aslan's world) is supposed to represent the deepest and most pure wishes of the knight's heart being fulfilled in the final quest.

But - all this is speculation, although it is fun. Happy Reading.

R Gates