I didnt write this...its an answer I saved one time in case i ever have to deal with this situation so i cant say how well it works.
................
ASP sample
First of all create a txt name input text and add it into your server. where
you can find or view it as:
EX:
I'm going to give you 2 types of ASP
see if which one work for you :
Type #1:
'--------copy below-------
<%
Dim objFSO, objTextFile,thetext ' Declare variables for the File System
Object and the File to be accessed.
thetext=request.form("thetext"

' Request the text you wanted to save
Set objFSO = CreateObject("Scripting.FileSystemObject"

' Create an instance
of the the File System Object and assign it to objFSO.
Set objTextFile = objFSO.CreateTextFile("
objTextFile.WriteLine "thetext=" & thetext ' Write in the input.txt.
objTextFile.Close ' Close the file.
Set objTextFile = Nothing ' Release reference to the text file.
Set objFSO = Nothing ' Release reference to the File System Object.
%>
'---------stop here-----------
Type#2
'---------start here----------
<%
Dim objFSO, objTextFile,thetext ' Declare variables for the File System
Object and the File to be accessed.
thetext=request.form("thetext"

' Request the text you wanted to save
Set objFSO = CreateObject("Scripting.FileSystemObject"

' Create an instance
of the the File System Object and assign it to objFSO.
Set objTextFile = objFSO.CreateTextFile(Server.MapPath("input.txt"

) ' Open
the file
objTextFile.WriteLine "thetext=" & thetext ' Write in the textfile.txt.
objTextFile.Close ' Close the file.
Set objTextFile = Nothing ' Release reference to the text file.
Set objFSO = Nothing ' Release reference to the File System Object.
%>
'-------stop here-------
Make sure your server Support ASP.
make sure.. all files are in same dirctory (SWF/ASP/TXT)
Last will the action from flash
loadVariables ("
"/", "POST"

;
and you all set .