How to upload your own file:
1) Click "Browse" to locate a file on your hard drive to upload.
2) Click "Upload File(s)!" to upload the file. Write down the name of the file you have uploaded. For example, picture.jpg
3) You will automatically be returned to the message forum. When writing your message, goto the Optional File Upload: segment. Add the name of your file after the pre-entered text
4) Post your message and you're done! :)