More on the photo issue....
when one attaches photos etc to a forum post, under the "Attachments and other options" button below the text box, there are various choices - when one uses the (attachimg=1) code - within the square brackets -
it is possible to attach larger photo sizes which will be automatically resized to the page and open in the text box. (I've used () type to allow you to see without confusing the system with code when using the code in square brackets - that is to say, if I showed the code inside the square brackets all you would see is an attachment unavailable message because there is no picture loaded)
A screen grab of those options is shown below....
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