Rename files based on a field in the file?

I’m not sure where to ask this so I’ll start here.

I have PDF Creator 1.6.2 and I use this to print invoices from MS Dynamics SL.
running Windows 7 Pro, SP1
Right now I print with just the counter and then I go through them (using the preview pane in explorer) and rename all the files by hand with the invoice # and project #.
is there a way to tell PDF creator to use a specific field in the file (these are crystal report files) and set that as the name of the file?