Basically if you put the (movie)Blu-Ray into your ps3 and scroll over to the “Game” section on the XMB,you will see a Ghostbusters icon.Highlight it,press Triangle,and select install.It's an okay looking theme with 3 or 4 backgrounds that change everytime you turn on your ps3.

I installed the one from the Bluray and LOVE it.

If there's one for the game though, I want that too.

So if anyone knows what the original OP was talking about, please share.