licensing: include a copy of the gnu gpl in the zip file, and make sure you also release the source somewhere

distribution: this site and loose-screws.com have file upload links, and you can email rootrider at shellfront.org to add it to his module and source archive if you dont have a server to host it. i would suggest sending it to loose-screws and shellfront even if you are hosting it elsewhere, since that is where most people get modules from.
you might also want to email the litestep mailing list about it... maybe post a news item to blizzle.com as well... there are all sorts of options(: