First, it isn't "DSON" - that's the fiel format used by DS 4.5+. It's the DSON Importer for Poser (the plugin for importing DSON-format content). This is an important nit to pick as people get confused by products that say they have a DSON core installer, thinking it means it works in the importer when in fact it means the opposite. In order for content to be usable with the DSON Importer ir needs Poser Companion Files. There will then be a PoserCF zip, which contains the Poser library files, and a DSON zip, which includes textures and geometries. In order for the content to work with the installer both must be installed to a Poser library folder (the folder you'd install regular Poser content to). If there's also a Legacy zip that isn't needed - it contains files for older versions of DS (4.0 or before) which the importer won't handle. It is possible to use DSON Importer without Poser Companion Files thanks to Dimension 3D's script, which launches a fiel browser with which the .duf DSON file can be selected and then sends it to the importer, but there will of course be no Poser-optimised materials then, and some content without Poser CFs wil simply not work in Poser or will not work acceptably (for example, DS has smoothing and simple collision detection/avoidance which can help with poke-through, but the importer doesn't support that). Scripts>DSON Support has several useful tools - the Importer preferences give the version number, access to the log for trouble-shooting and the locations used by the cache and the writable Runtime (where the temporary files that Poser actually loads are placed) The two folders must be writable - that is, not in a folder to which the application doesn't have write permission (such as anywhere in Program Files on Windows Vista or later). Transfer Active Morphs is used to transfer the morphs on the base figure (Genesis etc.) to any conformed clothing, and should be run after applying a shape that causes poke-through (if the clothing already supports the morphs it won't be needed, of course). The Script>DSON Support>SubDivision sub menu allows the user to turn SubD off, or to set its level (up to level 2 - the new HD morphs need level 3, for which the user will currently need to override the limits n the slider and set the value directly at render time, though the menu can be used to turn the level back down during posing).