1) I clicked 'Reply To Thread'
2) I then clicked the 'Go Advanced' button
3) Then click the 'Manage Attachments' button
4) Then click 'Add Files'
5) I then clicked 'Basic Uploader'
6) I then clicked 'Browse' to go to the folder on my pc the image I want to upload is in.
7) I then selected the image I wanted to upload
8) I then clicked the 'Upload' button and the image was attached to my post