First of all, welcome to the forums! I hope you'll be able to learn and teach others some things.
I think the creation of topics in the Wishlist forum(s) is limited to moderator+, but I'm not exactly too sure. Usually your forum permissions are displayed in the bottom-right corner of the forum you are viewing so that should say whether or not you can post there. For me, as I am a moderator, it shows:
Quote:
You can post new topics in this forum
You can reply to topics in this forum
You can edit your posts in this forum
You can delete your posts in this forum
You can post attachments in this forum
but for you it might show
cannot instead. If I had to take a guess why this is, I'd have to say it would be to prevent spam in those forums.
Anyways, welcome to the forums once again and I hope you enjoy your stay.

-Xxcom9a