To be able to add an image to the Forum follow the instructions below. This is different then making an image your profile picture, if that's what your looking for go to this FAQ.
1. Choose the image you want to use from your computer
2. Go to http://imgbb.com/ and upload your image (you do not need to create an account to do this)
3. Have dropdown menu under 'Embed Codes' have 'Viewer links' specified
4. Copy URL it generates and paste in the forum you want it to appear
5. Complete your comment with any text you want to add
6. If you want to be notified when someone responds to your post check the box 'Notify me of follow-up forum replies via email'
7. click 'Submit' to post