I think what I will do before getting rid of the old computer is visually compare the Bryce presets between the old and the newly loaded versions, highlight the presets that are not on the new version (i.e., ones that I obviously downloaded from the net) per Caligula's suggestion, then export/import them to the new version of Bryce in one category (perhaps "User"). (Just ashame that Bryce doesn't allow for creating new library categories.)

Intel Core I7 3090K 4.5 GhZ (overclocked) 12-meg cache CPU, 32 Gig DDR3 memory, GeoForce GTX680 2gig 256 Bit PCI Express 3.0 graphic card, 3 Western Difgital 7200 rpm 1 Tb SATA Hard Drives