I'm running Win98SE with a 1.7Ghz Celeron and 128MB RAM, and while I do have some problems rendering at times, it's not usually Quarker's Hair (I only have the Grace Lion Hair) that gives me the problems. I recently installed a little proggy called CacheMan, and it has definitely helped, although only a little. One of the things that also helps me is, when rendering big pics (i.e. 2000x2000) leave the dpi at 72, particularly if you plan on posting the pic on the web. Extra dpi above that is useless and a waste of good RAM when rendering.