Theme function with Imagecache
Set up a new Imagecache preset at admin/build/imagecache/add name it to something like 'myimagecachepreset'.
In your template file you can remove print $content: and add the code below. and the rest of the content, like print $node->body;.
If your image is in $content you can edit your content-type and set "List field: Enabled" to release it.
