This is fairly easy to do. You'll need to upload the photos like you would normally, then you'll then need to create an album from which you can then embed the slideshow into the group. Here are more specific directions for doing this:
4. Click "Get embed code" under the album cover. Copy the "HTML Embed Code."
5. Navigate to the Group which you want to embed the photos.
6. Click the "Edit" button on text box, and paste the code there.
7. Whola!
This should do it. You can continue to add photos to that album and they will update there as well.
Thanks Sobey Wing....I'm beginning to think my originals' dimensions of 11x17 is pushin the limits....will be tryin an 8x11 poster soon and see if it works.
It looks like the Network forces the size to a perfect square. You could try opening it in photoshop and go to Image > canvas size > and make the canvas size as wide as it is tall. try uploading it then. OR you could try uploading it in the first under the descrition area. I can see that al ot of promoters have done that successfully - see http://www.earthdancenetwork.com/group/earthdancephoenix