Make sure you have a good video card with the latest drivers. I would recommend something by Nvidia, the newer the better. I also wouldn't NOT tranfer you libraries, but rather just keep them in the folders where they are at now and just link them to Poser 6 through the Poser 6 program. 1 gig of RAM seems to work okay for me, but if you are doing complex scenes, a lot of people think 2 gigs helps. Open GL is used in Poser 6 to give you a preview mode that looks more like the final render. This is mainly why you need the Nvidia card, because GL works best with this card.