John.. You are right in some respects about maybe it's time to update...can't disagree with that, but this guy was not even on about Poser 5. XP wasn't even out when they released Poser 4 and much of the models were written with Win98 in mind. When they started to develop Poser 5 was XP even readily available, afterall it's taken 2 years hasn't it? Remember - it's supposed to have been tested on damn site lower end machines according to the program specifications. Upgrading your ops system may work for some people but I also think updating drivers, additional memory and upating outdated hardware may help... I'm shifting to a new system with XP for running P5 with a shed load of memory, but judging by some of the posts... this may not even help.