If you are shooting with your DSLR in RAW without JPG, then quick preview of your RAW files (Canon’s CR2, Nikon’s NEF, Pentax PEF, Sony’s SR2, Olympus’s ORF) is quite inconvenient, unless you have installed any third party viewer.
Thanks to modular design, camera manufacturers can create their RAW image codecs for Windows Vista, which will add RAW file support to the built-in Vista Photo Gallery.
After installing the relevant codecs, the support RAW file can be previewed as thumbnail. Besides, you can also double-click your RAW file, and it will be shown in Photo Gallery, just like any other typical image files.
However, the codec doesn’t provide any image editing support.
Click at the following links to get the relevant RAW codec.
By the way, on a side-note, there’s a new slider called “Clarity” in Photoshop Camera RAW, since version 4.1, which increases mid-tone contrast for selective parts of the image, resulting in a “punchier” image. Personally, I find this extra feature to be very useful. If you don’t see the Clarity slider in your Photoshop Camera RAW, it’s time to consider upgrading the version 
However, just like any other iPod owner, I’m facing a kind-of-disappointing iPod “feature”, which only allow songs to be transfered into iPod, and not vice versa (transfer songs from iPod to PC). If given a choice, I don’t really want to keep 2 copies of the GBs of songs, especially in my office laptop; I would rather keep them all in iPod, and transfer any individual song out to PC if needed. But how?? 
