Does this plugin work with Joomla! 1.7?
Love this module and would also be interested if you know of a potential update release date for Joomla 1.7?
Great to hear you like Ninja Shadowbox.
Unfortunately there won't be a J1.7 compatible release.
This has to do with license and policy reasons for the official Shadowbox script.
I'm sorry that I can't help you further with this.
As an alternate suggestion you might check out JED if there's another extension that suite your needs, especially Shadowbox Media Viewer (not J1.7 compatible yet, but might be a potential candidate because they have a license).
I hope this helps.