Using Flash for a while, questions on easy updated flash pages

I use flash mainly for making intercompany training materials. I wanted to build some sites for some people but what is the best way to make the content (just the text) easily updated for people who don’t have the FLA’s or know flash.

I was thinking of all text areas would pull in the text from .txt file, but not sure what is the best way for someone with little computer or web skill to easly update a txt file.

Would they have to upload the text file, is there some kind of wysiwyg editor that would put in bold tags etc and create txt files dynamically?

I hope this makes sense. Thanks for the help!