Actually, there is some progress, but I keep getting the "You are not allowed to use that image extension on this community." error while trying to post the pictures. The pictures are hosted by Google. Not particularly Internet savvy, so... I'm stuck.
Unfortunately, Google's image hosting services are not particularly forum-friendly, and I'm not sure I know anyone who's managed to get it to work. Basically, the forum software wants an image link that ends with one of the standard image file extensions (".jpg", ".gif", etc); anything else is "not allowed", as it's not seen as a valid image - and usually isn't.