I'll use this How-To's to resume you the steps to attach pics. Hope this helps
"On the manage attachments window When you click the "Browse" button, you will see the Open File dialog box appear. You can navigate within this dialog to locate the image you want to select. Click the "Open" button when done. Once you click the "Open" button at the bottom, the filename of the selected file will appear to the left of the "Browse" button. When the entries are completed, hit the "Upload" button to proceed. Wait while your pics are uploaded, then you will see them listed under "Current Attachments". Close the Manage Attachments window and you'll be back to the post form, your pics are listed under the post window. Now scroll down and hit the "Submit New Thread" button to submit your thread"
Let me know if you can figure it out.
Licia