FSO virker ikke

Jeg bruger dette script:

<%
'Path of TXT-file to use. Script must have write access.
MyFile = "cgi-bin\guestbook.txt"

'Ready Scripting.FileSystemObject
Set MyFileObj=Server.CreateObject("Scripting.FileSystemObject")
'Opens textfile. 8 = add line to file, true = create if it doesn't exists
Set MyOutStream=MyFileObj.OpenTextFile(MyFile, 8, TRUE)

  'Writes the line to the file
  New_line = Request.Form("new_line")
  New_line = Server.HTMLEncode(New_line)
  'Adds the time and date it was posted
  New_line = "<I>Posted: " & NOW & "</I><BR>" & New_line
  MyOutStream.WriteLine(New_line)

'Closes the file
MyOutStream.Close

'Sends user back to default page
Response.Redirect "guestbook.asp"
%>

,men da webserveren er linux/apache fatter den ikke det windows-specifikke FSO.

Hvad skal jeg bruge istedet for FSO??