Writing a text file from a swf?

I am trying to develop a Flash site with text that is editable from the SWF file. The editor could log in via a password > dynamic text fields become input text fields which could be edited and THEN I need a method for writing the information somewhere so it can be loaded back in.

This is a small brochure site and I think a database is a little over-kill, and too expensive.

Anyone have any suggestions of methods for writing to a text file? Is it possible (I mean easy) to write a text file from Flash?

(I have looked for tutorials, if there are any I’m missing them)