Hello Leon! I see that you have asked a question on your own profile, luckily I looked here. It's more effective to post comments on someone else's profile because only you are notified of things posted on your profile.
When you are in the correct forum for the topic you want to create, you'll see alot of threads. Look above the threads for the black "NEW THREAD" button. It's on the left side of the screen. (There are two buttons, the other is near the bottom of the page.)