Hi,
[IMAGE1] would default as the standard Auctiva 400x300 image size. If you want to display a specific size, use the url tages, e.g [IMAGE1_URL], and create the specific HTML for implanting the image.
Example:
<img alt="" src="[IMAGE1_URL]" height="200" width="300" />
Note, this method does not provide the Auctiva supersize feature. Also, be mindful that a picture will stretch when it's height to width ratio isn't keep proportional to its stored dimensions.
Danno