I'm glad you got it figured out.
The "Add Poll" button was removed last time we upgraded.
For future reference for anyone looking to start a poll, click "New Topic" and look under the blanks for the Topic Title and Topic Description. It says: Poll Options Click here to manage this topic's poll.
In a few weeks (I hope), the poll system will again change. We'll be able to have multiple-question polls, and multiple choice polls.