You have two main options. Position the outer eyebrows (I think they're called 'upper eyebrows') in Poser and re-export the model. Move the outer eyebrow meshes forward in Bryce (assuming you exported the mesh as separate items. I actually find Bryce a dream to work in, so this is what I'd do. The other 'inner' eyebrows are just part of the head mesh with a different material. You can leave those the same material colour as the head, and paint the eyebrows on the texture map wherever you want them (usually over the eyes, LOL). If you delete these 'inner' eyebrows in Bryce, or apply transparency to them, you'll end up with holes in Viccie's head! What Zygote have done is give us a choice of methods for applying eyebrows to this figure. They will both work in Bryce, but you have to think ahead and choose the method most suitable. Personally, I find painting the eyebrows on the texture map easiest, but the advantage of using the outer brows + transparency is that you don't have to change the whole head map just to change hair colour.