Microsoft recently released a codec pack that allows you to view RAW image file thumbnails from within Windows.
http://www.microsoft.com/en-us/download/details.aspx?id=26829
http://www.microsoft.com/en-us/download/details.aspx?id=26829
Finally! I've been using Adobe Bridge just for that purpose.
I've been looking for something like this forever, now i can actually delete phones off my computer, instead of on the back of my camera
Win7 views my RAW files without any add-on (althought it might be from HP I'm not sure)
Something special with you, because before I installed it I never saw any RAW thumbnails.