Help exporting txt files

I want to make a news header to my flash site…
I’d like to enter some text in a textbox on the site and upload that text to a txt file. Then I’d use dynamic text to view that txt as a header on my site…

How can I edit a txt file through flash? Not very comfortable with uploading the txt file every time…
I’ve seen some tutorial about that but it involved pearl scripts and I’m afraid that my free webhost doesn’t support pearl… At least it didn’t work one bit…

I could use some help here…