I have made a slide show in Flash with ca 250 pages. I want
the user to pick the pages they will use in their presentations,
and have that list written to a file that they can bring with them
to another computer.
Are there any means ofwtiting data to a text file from
No. You would need to write that in a server language such as
PHP or if you are running from the desktop, you would have to look
into compiling the Flash file as an AIR file (which is coded in
AS3). From AS2, you only have the server-side option.