AMD Athlon 256 MB RAM 111 gig HD, 90 gig free NVidia GForce 2 Win 98 - custom setup tweaked for maximum efficiency Poser 4 and 5 both work without unusual problems (they crash, and randomly eat their own young, but hey its Poser). I do not animate, and have only minimally used th hair room. Had some issues with hair, but resolved with reboot. I prefer to start 'fresh', to minimize lockups, so I usually reboot if I've been doing something else memory intensive like Photoshop. I can use Photoshop6 and Poser4/5 at the same time, along with UVmapper and MatPoseEdit and some other little things but I do that as little as possible.