P-Boost is an excellent program - he put a free program in Freestuff to test your system - there's a small group whose systems have a problem with a feature or two, but running that test program will tell you - then you can check with him to figure out if those features will cause a problem - he's really pretty great about customer support - eager to resolve any problems. To answer your question more directly, however; Yes, you can move any library files (don't forget the icon - has the same name, but the extension is PNG or RSR) to another folder in the same library - I do it all the time, or I'd have over 780 folders under props alone. Poser has real problems when you get close to 250 folders - really big problems when you exceed 255 or 256. You can use Windows explorer or just about any good file manager to move the files - I like the free P3d0 program, as it will display Poser thumbnails as graphics. One problem to look out for; If you're consolidating Character or prop folders, be careful moving files if there are OBJ or texture files. This usually means the files were made in ProPak, and whoever made them didn't bother changing them over to standard Poser organization - If you move such files, they won't be able to find the OBJs or textures unless you "hack" (manually edit) the CR2s or PP2s.