Quick question; not so quick an answer. You can add them as attachments as you would with any email. To add them into the body of the post, you need to have them stored at an online address that you can enter into the box that comes up when you hit the "Image" link below the posting window. I use PBase. So when I go to enter a photo, I press "Image" and in the box that comes up I enter the address of the image: http://www.pbase.com/cpmphotography/image/13347645.jpg where the number is the file number and then I add the dot jpg at the end.

If you don't have an online account somewhere, the attachment approach works just fine.

Jim