Attached Link: http://market.renderosity.com/%7Ephoto/newweb/contests/cnt_004.htm

this is the link to the rules, or you could click on the monthly challange link above and it's in there someplace. and the vote botton is to vote the image into the hot 20. if you're in a topic gallery (the first slide down) there will be a hot 20 link where you can view the 20 "hotest" pics from the last 15 days or something. http://www.renderosity.com/gallery.ez?Hot=Yes&Sectionid=8 this will take you there.