First, select your image from your hard drive and have it ready...
When you've finished typing your post and you're ready to add an image, look above the message box and you will see a row of tags, place your cursor on the tag 15th from the left, the one marked "host an image" and left click on it. A window will open saying 'upload your image'...left click on the little box marked 'choose file' and your will be directed to your pictures/documents folder on your pc.
Left click on the image you wish to add to your post, the image name will appear alongside the 'choose file' box...left click on the small box underneath marked 'host it', wait a couple of seconds and another window will appear giving you three choices marked 'thumbnail' 'image' and 'image url'....left click the centre one marked 'image' and will be highlighted in blue. Left click on the little box alongside it marked 'copy'...move your cursor into the message box, right click and then left click on 'paste'...your image url will appear in the message box.
Scroll down a few turns and you will see two tags marked 'preview' and 'send'....left click on the one marked 'preview' and above you will see how your post will look complete with the image inserted.
Scroll down again and press the tag marked 'send'...you will now have have sent your post plus the image, wait a second and your new post will appear before you.
To add muliple images, just keep following this instruction, remembering to press 'review' every time, it clears the image host box and you can see what your doing.