well you can save almost anything using XML and there are plenty of tutorials on how to read and write XML out there... if you cant find anything, ill try to find what i have (i think it was a function that was hardcoded to create an xml file with certain nodes and such, one for reading it, and one for updating it). Its kind of messy (i think lol), but it might be a good start for you if you cant find anything...
Edit: oh and you can start with the System.IO class to start reading and writing files...
Edit 2:
Found these in my favorites...
http://www.dotnetspider.com/tutorial...roduction.aspx
http://www.csharphelp.com/archives/archive199.html
http://www.c-sharpcorner.com/Tutoria...utMellli21.asp