I don't think I can even upgrade, don't want to attempt it. It states in a thread somewhere here at Renderosity, that Poser 5 is not supported for Windows NT. I use Windows NT, mainly because it does not crash continually like other windows products. Have used it for years and don't want to change operating systems and have to install tons of software all over again. Do I want to spend $200 to upgrade and then find out that the product will not work at all on my computer and then go through some kind of hassle with a company like this.. I doubt it.. I can't afford a new operating system on top of the upgrade. I would have to build another computer just for Poser 5.. Doubt this will happen in the near future.