Microsoft has introduced new codec pack for RAW images , without using a third-party software  simply you can view & Edit your photos , It supports many popular Raw formats once you Installed the camera codec pack It's makes it possible to view RAW files in Windows Explorer , you’ll be able to upload uncompressed RAW files directly from your camera—and then view them in Photo Gallery along with your other photos.

Download: http://www.microsoft.com/download/en/details.aspx?id=26829