Wade,
You will need a WI trail pass. These can be picked up anytime at most WI gas stations for $35.00. Can also get them at Wal-Mart, Fleet Farm...(any place that sells WI hunting licences)
Also remember to make sure they are appiled correctly!! I didnt apply enough pressure to mine earlier this year and it blew off at some point. They do not re-issue trail passes....
So I had to fork over another $35 for a replacement.