Personally I've never had any of the major problems with 5 that I've read about in various threads. I've rendered scenes with MANY Daz Generation 3 characters (up to 9 is all I've tried so far) all clothed and "accessorized" plus environmental props and characters. I've done this boh in firefly (a vastly superior renderer to the p4 renderer if you configure it properly) and in p4 renderer with very few problems (mostly with high poly hair models) I usually have photoshop open in the background. My machine is hardly "top of the line" . It only a 1.5 GHZ with 768 MB ram. I think the key here is XP. 98 just doent handle memory as well as xp does. XP isn't a panacea but I think it will help you out immensely. That combined with seperating your p4 and p5 should benefit you quite a bit. Yes P5 has a small memery leak, but its nothing that can't be purged with free utilities. If you think p5 is memory intensive, try maya or 3ds. You might as well not even have IE running with either of those two.