First, make sure you are using Internet Explorer, or Firefox. What I am going to tell you, will NOT work with CHROME ( browser from google )

Now, click the icon that looks like this
That will pop open a box that looks like this:

*** How to post pictures ***-select-file.jpg

If you have a file on your computer, click "select files"


This will pop open your file browser. Click the file you want to upload. You can repeat this procedure for as many files as you want.

Here I have selected two files:
*** How to post pictures ***-files-selected.jpg

If you then click "Upload files", wait for them to finish, then it will look something like this:

*** How to post pictures ***-attachments.jpg

You can them move those around as you like so that they appear whereever you want them to appear in your message. Just remember each picture is the word attach in brackets, followed by the number, followed by a closing bracket. See how I moved them here, they will be stacked on top of each other :

*** How to post pictures ***-attachments-moved.jpg

It looks best when there is one or two pictures per line.

When you are done, hit preview if you want to see how it looks, or hit submit reply to save. That's it!