In my working with cursors and icons recently, I've had the need to be able to process images created outside of cursor and image editors so they can be imported. I wrote IC Warlock in C# (source code and project files included) to help with cropping, resizing, and aligning images to common icon and cursor dimensions. It includes the ability to automatically outline shapes, and convert background color of an image to transparent (denoted by pixel color at 0,0), etc. Drag-and-drop support, dropping multiple images onto open app will launch new instances with the image and current settings (except outline colors atm). Will save where input image is from with [size] appended to filename.
You are welcome to try it out free, recompile the source, alter the code, do what ever. Just give due credit if you redistribute please.
IC Warlock program and source: http://www.vtxemu.com/misc/ICWarlock.zip
I may get around writing up mini documentation at some point, but until then, we can discuss here if need.