I need help posting photos on message board. Not that I'm a newbie but just stupid about posting on disscussion boards. Is it from a photo host? Is there a way to review the post before it goes online?

Your photos have to be on a website somewhere.  Right click on the photo, copy image location, then paste that link on picture url when posting.  You can't preview your post, but you can edit it within certain number of hours which I forget what it is.