One thing you can do is to store all additional textures for new characters and props in a seaprate file structure than in Runtime. I store all non-original Poser textures on an external HD in Poser/Runtime2. Texture files can be big and add up. If you need to delete non-essential Poser characters from the Library, save as a PZ3 file and store outside of Poser/Runtime.. I save a new character in its own folder with all textures, etc. elswhere and retreive it when wanted. Periodically burn a CD of your Geometries folder. My own Runtime folder is about 1.5 GB and my Other Poser folder is almost 5 GB. All in all having stuffed all this Poser stuff here and there, does not seem to disrupt performance on my Mac G4.