Do you have it hosted at an image host like Photobucket, Imageshack, or Flickr? If you do, you just copy and paste the URL for it into your post, highlight it, and then click that 'Img' button up there above the posting box to put the image tags around it.
You can't actually upload an image straight into the posting box like you can at some message boards.
How hard can it be? - Jeremy Clarkson
Make no mistake, this is a Supercar. Looks good .. goes fast .. nothing else matters. - Jeremy Clarkson
AMBITIOUS, BUT RUBBISH!