All you have to do is create a folder in Windows Explorer and name it what you want. Fire up P5, open the library panel, choose a category, and double click the up arrow folder at the top of the stack until you get to the panel that has a very short list of folders marked runtime, and a red dot next to one of them. Then just go down, and click the 'add runtime' mark at the bottom. You'll get a standard windows panel to locate your folder with.