If you got a digital SLR camera you probably do RAW shoots from time to time…so this could probably be interesting:
“Many photographers—especially those with digital SLRs—shoot in ‘RAW’ mode, which outputs a file format that is proprietary to their camera make and model (for example, .CR2, .NEF). These RAW formats preserve more of the original information from the camera than the JPG file that most other cameras output. This extra information provides greater quality, but it comes at a price of convenience. JPG is a universally supported image file format, but as anyone who has used RAW files can tell you, they are anything but universally supported.
In the past, RAW shooters had to either rely on RAW conversion software provided by their camera manufacturer, or put their fate in the hands of the myriad of software makers who have attempted to reverse-engineer these formats for support in their software applications. This led to a number of problems: compatibility issues, varying quality or inconsistent results from one application to another, and holes in the user workflow where RAW support is lacking.
Windows Vista attempts to solve these problems by providing an extensible platform that allows support for these (and other) new file formats to be added to Windows by the owner of the file format. This support comes in the form of a codec, which users will get from their camera manufacturer, either by downloading it, or provided with a new camera body. The Photo Gallery will even detect the presence of these files and help you download a codec when it exists.
Microsoft has been working with the major camera manufacturers so that they can provide codecs for their various RAW formats to their customers. Once these codecs are installed, users will find that they can view their RAW files and thumbnails throughout Windows Vista.”
There are Codecs available for Canon, Nikon, Sony, Olympus, Pentax and ArdFry