First off you can find information on the selling tools in the wiki
http://www.gcuwiki.com/index.html Mouseover "Selling" in the upper navigation and a drop down menu will give you selling options.
Secondly, as I have recently discovered it is up to the affiliate to comply with their countries laws when it comes to advertising. I actually wrote an article on this subject on my blog. If you are interested in the U.S.A. laws you can find some info at:
http://sunatnight.xanga.com/753401242/the-business-side-of-art-%E2%80%93-externa
l-environments/ Based on some feedback that I received, I gather that every country is different. The federal agency in the U.S. that governs advertising is the Federal Trade Commission. What country are you in?