No Option to Create Terrain?

I just got a new computer to use specifically for game development, and after much troubleshooting to get it to work with Unity, there are no terrain options in the menu.

[13443-no+terrain+support+picture.png|13443]

There is no terrain menu. It is probably something simple but this happens for every project I have created on this computer. What am I missing? Thanks in advance for any answers.

There is no Terrain menu in Unity 4.2 and later; use the Create → Terrain menu item in the Hierarchy panel. You can also use GameObject → Create Other → Terrain.