You can get better organized by using more than one Runtime. It's easier to find stuff. Poser will also load faster. You can choose which Runtimes to link directly to Poser, at any given time. If you're only working with Vicky 3, just have that Runtime linked, etc. One really big advantage of multiple Runtimes is the ability to backup everything in that Runtime. If you can keep a Runtime down below 4.7GB, you can back it up directly to a DVD,without the need for compression. You could even load that DVD Runtime directly into Poser. (Of course you can't write to it, unless you have a rewritable DVD.) Multiple Runtimes can be a bit tricky when you use DAZ "Generation 3 figures" such as Vicky 3. You need to have the !DAZ libraries in Poser 5, in addition to your external Runtimes. You could easily copy all the !DAZ folders to Poser 5. Just get them in the same location as they are in your external Runtimes. Again, you want to create a folder that has the name of your Runtime, then have your Runtime folder inside that one.