See more Microsoft Office OneNote demos at http://office.microsoft.com/en-us/help/FX100485311033.aspx
Microsoft Office OneNote 2007 gives you lots of flexibility for organizing your notes. You can set up your structure beforehand, or just start with a blank slate and organize as you go — or later, when you have time to think about it. Set up notebook sections by project, by date, by client, or any other way that suits you. And then change it later if you need to, just by clicking and dragging.