iPhoto not showing up -- Network Home Folders on Windows server

When our users who have their home folder on a Windows server open iMovie, they can't access their iPhoto library within iMovie. The same is true for the 3rd party app, ComicLife. Is there something going wrong where the Windows server is screwing up whatever links the iPhoto library with other apps? Users who are on the Apple server are working just fine.

Thanks for any help you can give.

For reference, this is any mac client on 10.4.9 with Networked home folders going to either Win2003 server or Mac Server 10.4.10.