I get rather annoyed when a Litestep theme mucks around with things that aren't part of Litestep. If you really think people will like your mouse cursors, include them in the archive, and reference them in the readme. If people like them they'll use them, if not they won't.

As for changing the cursors, it is a registry setting. Go look at a "cursor pack" for download somewhere. Generally they'll include a .reg file to merge the new set of cursors.