Have you got it loaded yet? Try exporting the file as a .dxf from poser. Some of the comments on the metacreations site (when they were still having the little weekly seminars) seem to indicate that Bryce 4 has no upper limits on .dxf format files, not that I believe too many people are pushing the 10 meg limit, (Onyx Tree Pro does, but then again, it models every leaf, stem, twig, branch, etc...) But actually, I think you are SOL till you figure out a way to reduce your file size. If you have 3Dsmax, why are you bringing it into Bryce? Doesn't 3Dsmax have a superior renderer? Also, does 3Dsmax have a way to reduced vertex density. I'm just starting to use Cararra and I thought I saw that on one of the menus. Maybe you can you cut it in to two halves, bring one in and create a mirror image in Bryce, group together and voila. I really suspect that you will have to reduce the model size some way for it to load into Bryce. Its not a hardware problem either, as you obviously have sufficient firepower there.