Is there any way to open the picturehub app for a photo on WP7?

Question

In my current app, I'd like to use the XNA MediaLibrary classes to save an image to the user's picture hub folders - that's easy enough...

However, then I'd like to open that picture in the PictureHub - especially so that the user can then easily share that photo.

Is there any way anyone knows to do this? I've looked and found nothing so far - and I tried MediaPlayerLauncher (but that failed - it's really built for music/video).