Basic Notepad for a website

Question

Hey everyone, I need to create a very simple notepad, it will be part of a collaboratory website. All I really need is pretty much a text field to type. I just need to be able to save the notes that a user types. For my class project we are building a collaboratory, instead of using a Database we are saving everything in XML files. So in my case I need to enable the user to save their notes to an XML file. Each user in the colllaboratory gets one notepad file, so they can add notes to only one file and constantly overwrite the existing, but never open more than one per user. I'd love to talk to anyone that can help me out, cause i really need some assistance. My AIM name is Tambo06, and my email is the [email protected]. If you happen to see my online please IM me.