As you know, all images you post are already automatically capped at the forum post size, with the option to click on it to expand. You can also still use the [gallery] tag to quickly create thumbnails.
But I figured we need more freedom around here, so you can now also set your own image size when posting. The code is:
Wherein you can replace the "400" with any pixel size you want for the width of the image.HTML Code:[img="400"]URL[/img]
Freedom.
[img="500"]http://ttoes.files.wordpress.com/2010/05/bald_eagle_head_and_american_f lag1.jpg[/img]