Page x of y function in InDesign

(IND CS 6 / Windows 7 Ultimate 64 bit)

Is there a way to automatically insert the total number of pages like the current page number insert. I have "Page A of  X" set up on the master and will manually insert the correct number when the document is done, But I'm thinking with all the cool and groovy things INDD does, there has gotta be a way. Am I wrong?

Thanks,

Joe