Poser 4 also searches for textures within Runtime - if not found, it will ask you where they are. For distribution, they should be packaged within :Runtime:textures:[subfolder] If you zip them without paths, they'll end up cluttering the Runtime since many people will just unzip to there (and I think that Poser won't see them there). If you zip with paths to your development directory, then the same problem will occur, but with a load of strange directories. Poser users have become used to just unzipping straight to PoserRuntime, so illogical as this behaviour may seem, you ought to allow for it. :)