Hi Garry,
Campfires and moonlight are a wonderful combination for any photographer. The biggest challenge that you have in a situation like this though, is actually managing the contrast of the scene. Because both the fire and the moon are rather bright both our eyes and the camera adjust for them but we fail to see the magic that is happening in the shadows.
Assuming that you used a tripod to make this image I would have been inclined to actually make two or even three photographs at different exposure settings. The first exposure would be a short exposure to capture as much detail as I could from the fire and the moon. I would then make a second exposure at a much longer shutter speed, but this time I would hold a cap (as in hat) about 30 centrimetres away from the camera so as to block light from the fire reaching the lens; the purpose of this exposure would be to capture detail from the surrounding trees. You can actually make two or three different photos at this longer shutter speed and as you do so, move the hat about so that you also reveal the foreground. Then all you need to do is combine these photographs together in Photoshop or Photomatix later on.
To improve the image below I selected the tree and this sky in the upper right of the picture and then I used the Curves control to brighten as much detail as I could from the shadows.
I then opened the Selective Colour tool, selected the Neutral range then moved the Yellow Slider to the left to bring some blue into the left part of the picture.
Image Doctor's edited version
