I wouldn't call it bragging if someone tells details about his system - a lot of questions could be answered much faster and better if everyone would tell basic details with the request - whatever OS it may be. Whistler, my Macinstaller tool manages a special "ExtraRuntime" folder which works like your "Poser Supplemental", you can keep your Runtime free of all custom stuff. Basically you have two alternatives, you can either setup the installer to put everything into ExtraRuntime (this way you have one single folder for all custom files - Textures, libraries, Geometries), or you can even leave everything at the original destination. If you want, this may include ejectables like CD-Rs, but you should keep in mind that all files should be reachable when Poser needs them. I personally recommend to chose ExtraRuntime, this way you can easily back it up, and you can also easily update/re-install Poser at any time without spending hours to re-install your extra models.