I didn't know either, so I played with it and I think I figured out two ways. You just don't think about these things until you want to do it or someone else asks.
The first one you start out by clickin New Thread in the specific forum.
2. Post your question.
3. Go beneath it to additional options and check Yes, post a poll with this thread.
4. Click Submit new thread under the Additional Options guide.
5. This brings up the place to type your poll question and up to 4 options
6. Then click Submit New Poll.
The second way you actually post your new thread the same way you would post any thread, then
2. click on thread tools in the bar on top of your post.
3. Click on Add a poll to this thread
4. Then follow the same instuctions above
Anasci, please correct this if it's wrong.