Cool, Thanks!Here's an update that adds support for reference points.
Each image has a reference point. The reference point is used by the game to determine the logical center point for image transformations (rotation, scaling, etc). The previous version of the image tool just used (0, 0). This new version allows you to specify a different reference point for each image.
I've also added a line of help text to the resource tool that reveals the -extract-all option. (The option was already there, but I forgot to include it in the help text.)