Ack! No no no!
I'm a staunch traditionalist...pleeeease if you're new, read them in the originally published order:
"Lion, Witch, Wardrobe"
"Prince Caspian"
"Voyage of the Dawn Treader"
"Silver Chair"
"Horse and His Boy"
"Magician's Nephew"
"Last Battle"
It's just so much more magical and enchanting if you read them in the order Lewis himself wrote them. Otherwise if you do it in the order which the publishers have rearranged them (which I personally detest), some of the magic and fantasy is ruined for you. It's like reading a textbook where everything is spelled out for you with no chance to wonder about things, question lovely little details, and those fantastic "Aha!" moments you get when you piece things together.
Besides, the way LWW is written it really is the only proper gateway to Narnia IMO.