How to Install a 3D Plug-in for Photoshop CS6

I need some help with Photoshop. I am trying to create a 3D image from a 2D image in Photoshop CS6 but I cannot find the option required to do the conversion. After searching the internet for a while, I came by one article which suggested that I need to install a plug-in to get the 3D functionality. Upon further searching, I found nothing to that effect. Could some please help me find this plug-in and also provide some sort of guideline to help me with the installation?
