I just went through this, so I will copy and paste what Barry from the website said to do.
"When you're typing up a post, in all those controls for the text box there is a paper-clip icon for attachments handling. Press this button.
That brings up a dialog that allows you to select the Files (aka pictures) you want to include in your post. Once you've selected the files you want from your computer disk
, you have to press the "Upload" button at the right side of the area where you specified all the files.
At this point, if you do nothing else, the pictures will appear at the end of your post. If you want to insert them "in-line" with text around them, you have to press the little arrow next to the paper-clip icon. That will allow you to insert the pictures where you want them"
It worked for me, had to read it a couple of time, as I'm not the fastest with the computer "stuff".
Hope this helps and God bless,