There is nothing special needed beyond the ordination in WI (where I'm at). I've still got my ordination email:
Date of Ordination: 08/26/08
by Kevin Andrews, Pastor
www.ulc.net
I've got a few wedding ceremonies. I found a neat one on their sites forum for non-denominational god-believers and one unique one that's based off a Cherokee Indian marriage ceremony. I also made a ceremony from scratch myself that is entirely secular and is based off of the idea that marriage is a contract. It is an easily adjusted one too in case it is a monogamous/polyamorous/gay/etc. wedding.
I can post the text if any of you guys want it.