Yes it is an obvious forgery. Box 34567?? Get real. Whoever pulled this stunt must be a dummy.
That box number shows up in a number of these docs related to Bush's service. I just saw it again on a bunch of doc's linked from KerrySpot (a bunch in PDF).
Odd.
I'm very much aware these documents are phony, I just found it funny that Rathers and CBS are blaming others at the same time they plan on defending the documents.