Hi Red-Dog,
when you reply to a thread just under the main text window, you will see a little tab that says manager attachments. (see screenshot below) if you click on this you will see another window appear.
From this second window you can navigate to the image you wish to upload.
Once you have your image identified in this second window there is a little tab lower down on the right in this second window that says upload files.
hit this and wait for the your file to upload.
Once uploaded you will see a little icon of the image appear just above the manage Attachments tab in the main text window, use the close this window tab at the bottom of the second window and then complete your reply normal way.
I suggest you use the format of .jpg to save the images you wish to upload. and the file size and resoultion need to be:
976.6 KB or smaller
Max width 1280 x Max Height 768
hope this helps,
regards Rob.
