A system for generating digital postage stamps wherein a PC requests digital postage stamps from a data center. The data center generates a digital book of postage stamps, which the PC downloads to its hard drive. The digital book of postage stamps includes a read-only software module that prints each digital postage stamp using stamp related information contained within the software module. The software module on the PC verifies that the signature of the PC is identical to the PC signature that was stored in the software module when the software module was configured at the data center. If verified, the software module generates the digital postage stamp and then initiates printing on a printer coupled to the PC. The software module renders the data associated with the digital postage stamp being printed unusable for subsequent generations of digital postage stamps.