According to
DPReview,
Adobe Labs Lightroom software is now available for Windows (in beta form) - previously, this was only available for the Mac. For a limited amount of time, Adobe Labs is offering free downloads of the beta product for Windows (according to the website, version beta3 is set to expire
January 30, 2007), however, you do need to have an account (which is free) in order to download the software.
I will be installing this tonight and "kicking the tires". Since I seem to be the primary photographer in the family, my (digital) picture collection is starting to become difficult to manage, so this software might do the trick.