Transferring the iPhoto library to windows

You can't.

Best you can do is export all of the photos, and import them into something like Picasa, but you'll still have to reorganize all the photos again.

Unfortunately, you can't.

You can, however, export out all the photos and move them to Windows. Then you can use Picasa (by far the best Windows tool for photos.)

iPhoto's "Events" and such are proprietary and you won't be able to transfer that structure and data.

http://hints.macworld.com/article.php?story=20081108132735425

use that script to export keeping the event names. Useful if you've organised them that way in iPhoto (which you probably have!)