There have been a lot of requests for a Windows version of Sofortbild. There is something that might be interesting for you: Bernd Peretzke has written a similiar application for Windows XP and Vista called DCamCapture. Bernd is using the Nikon SDK as well, his application has a similar feature set and it is also free.
Check out DCamCapture: English page | German page.
Posted in: Platforms