I do tech support for a software company, and take notes on clients, software applications, projects, etc. I'm looking for a note taking app that supports the use of folders and sub-folders. For instance, I envision a 'notebook' with a folder called 'Clients' and a folder called 'Applications'. Within the Client folder, there would be sub-folders for each client. Within that sub-folder, there would be multiple 'pages' on various topics pertaining to that client. And in a perfect world, there would be a corresponding Windows application to provide access to my notes from my PC. Any thoughts? Or am I asking for too much? Thanks in advance!