I'm not going to rush to upgrade. I have an uncomfortable feeling that a "fixed" version of Poser would really need to have 64-bit, multiple-core, support, or it's just going to be left behind. Anyway, I'll let somebody else find out what works. P7 could easily be in new-computer territory, and I want to be sure that it is worth that cost. The software itself, upgrade or full price, isn't the expensive problem.