Hi Paul,
Do you have any account on free image repository on the internet such as photobucket or imageshack? if you do have, you should upload your files to that account. After that, you just need to copy the image link showed on below of the picture you've uploaded. Copy that link, put it between on your message body. That's it.
For example, the link of the image is on
http://paul.com/image.1jpg. On the message body, you just need to write down the link between the bracket:
'
'
To check whether the image is shown or not, just click the preview button, before you submit your massage.
Ok. Selamat mencoba.