As long as you meet register before the deadline you are all set. You still have plenty of time.
http://www.elections.state.ny.us/Voting.html
MAIL REGISTRATION Sec. 5-210(3)
Applications must be postmarked not later than October 8th and received by a board of elections not later than October 13th to be eligible to vote in the General Election.
IN PERSON REGISTRATION Secs. 5-210, 5-211, 5-212
You may register at your local board of elections or any state agency participating in the National Voter Registration Act, on any business day throughout the year but, to be eligible to vote in the November general election, your application must be received no later than October 8th except, if you have been honorably discharged from the military or have become a naturalized citizen since October 8th, you may register in person at the board of elections up until October 22nd.