From the Messages screen, click "Create Message".
Fill in the Subject area (Required field), add text to the Message area, click "Add Attachments".
The file browser window appears. Click the "My Computer" icon to browse for the file to be attached. If the "My Computer" icon is not visible, be sure you have the correct version of java installed on your computer.
Navigate to the file you wish to attach, click on the file, select "Open".
The file will now appear as an attachment in the discussion posting window.
To remove, the attachment file, click on the remove attachment icon. When ready, click "Post".