Rutty just trying to help you orothers out, I have sold licenses and had to explain this to many people, some just didn't know and some just Know it all!
Read here or pg 25 of your 2005-2006 guide, top left corner of the map.
http://www.dec.state.ny.us/website/dfwmr/wildlife/guide/regdeer.html
Your 2004-2005 licenseis good till sept. 1st 2005. October 1st starts your new license year. If you get stopped fishing or hunting before the 1st and show your new license (2005-2006)you will be ticketed as it is not valid till OCTOBER 1, 2005.