Difference between activating Photoview complement and plugin

Hello all, I'm not too expertise in Solidworks, so I manage with the complement that is possible to activate inside Solidworks (In my case, 2011), as a tool  bar.

But I have discover there is additionally some kind of "plu-in", I guess, to be precise, I'm refering to next picture:

I'd like to download this plug-in. I'm willing to work in such an environment.  Does anybody know where to download Photoview 360 plug-in ?????

Thank you !!!!

SolidworksPhotoview 360