If you want to start a new thread with a poll in it:
1) Goto the sub-forum you want the thread in
2) "Create New Thread"
3) Under the text box you will see another box labeled "Additional Options"
4) Check box marked "make this thread a poll"
5) Choose the number of choices your want and click submit
6) You will be forwarded to a new page that lets you label each choice as you see fit.