just add your screenshot file to your post. it will show up as a clickable little picture.when u post:1. check the box that says 'Attach File(s)' down at the bottom (its before the 'submit post' button)2. your screen should then extend down and give you the option to upload several files.3. click 'Browse...'4. find your screenshot file and click 'OK'5. then, before clicking 'submit post' - click 'Upload File(s)' (its located in the center of the 'attach file(s)' box at the bottom. You MUST click 'Upload File(s)' before submitting your post, otherwise your screenshot will not be included in your post.I hope that makes sense