Navegar por los directorios del server. 
Lo que habia pensado era, a la vez que se muestran los archivos, que se muestren las carpetas, y al pinchar en una carpeta, que llame a la misma página .asp pasandole como parametro el nombre de la carpeta que he hemos seleccionado, para asi crear una nueva ruta en el recordset y que me vuelva a sacar los arxivos (y subcarpetas si las hubiese) que hay en esa carpeta en la que hemos pinchado. Creo que se puede hacer, verdad?? El problema está en que no se como mostrar las subcarpetas 
Espero que alguien pueda ayudarme con esto.Os dejo aqui el código que estoy usando para ver si alguien me puede ayudar a modificarlo:
Código PHP:
<%@LANGUAGE="VBSCRIPT"%>
<!--#include file="Connections/intranet.asp" -->
<%
%>
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body background="logo.png" text="#5E82AB" link="#5E82AB" vlink="#5E82AB" alink="#5E82AB">
<%
usuario = Request.ServerVariables("logon_user")
array1 = split(usuario,"\",2)
usuario2 = array1(1)
'kc_fsoFiles
'Purpose:
' 1. To create a recordset using the FSO object and ADODB
' 2. Allows you to exclude files from the recordset if needed
'Use:
' 1. Call the function when you're ready to open the recordset
' and output it onto the page.
' example:
' Dim rsFSO, strPath
' strPath = Server.MapPath("PlayGroundFSOStuff")
' Set rsFSO = kc_fsoFiles(strPath, "_")
' The "_" will exclude all files beginning with
' an underscore
Function kc_fsoFiles(theFolder, Exclude)
Dim rsFSO, objFSO, objFolder, File
Const adInteger = 3
Const adDate = 7
Const adVarChar = 200
'create an ADODB.Recordset and call it rsFSO
Set rsFSO = Server.CreateObject("ADODB.Recordset")
'Open the FSO object
Set objFSO = Server.CreateObject("Scripting.FileSystemObject")
'go get the folder to output it's contents
Set objFolder = objFSO.GetFolder(theFolder)
'Now get rid of the objFSO since we're done with it.
Set objFSO = Nothing
'create the various rows of the recordset
rsFSO.Fields.Append "Name", adVarChar, 200
rsFSO.Fields.Append "Type", adVarChar, 200
rsFSO.Fields.Append "DateCreated", adDate
rsFSO.Fields.Append "DateLastAccessed", adDate
rsFSO.Fields.Append "DateLastModified", adDate
rsFSO.Fields.Append "Size", adInteger
rsFSO.Fields.Append "TotalFileCount", adInteger
rsFSO.Open
'Now let's find all the files in the folder
For Each File In objFolder.Files
'hide any file that begins with the character to exclude
If (Left(File.Name, 3)) <> Exclude Then
rsFSO.AddNew
rsFSO("Name") = File.Name
rsFSO("Type") = File.Type
rsFSO("DateCreated") = File.DateCreated
rsFSO("DateLastAccessed") = File.DateLastAccessed
rsFSO("DateLastModified") = File.DateLastModified
rsFSO("Size") = File.Size
rsFSO.Update
End If
Next
'And finally, let's declare how we want the files
'sorted on the page. In this example, we are sorting
'by File Type in descending order,
'then by Name in an ascending order.
rsFSO.Sort = "Type DESC, Size ASC "
'Now get out of the objFolder since we're done with it.
Set objFolder = Nothing
'now make sure we are at the beginning of the recordset
'not necessarily needed, but let's do it just to be sure.
rsFSO.MoveFirst()
Set kc_fsoFiles = rsFSO
End Function
'Now let's call the function and open the recordset on the page
'the folder we will be displaying
Dim strFolder : strFolder = Server.MapPath("....datosred")
'Aqui arriba faltan las barras invertidas, no me las saca, aunq no se xq,
'sería "Server.MapPath("..\..\datosred\")"
'the actual recordset we will be creating with the kc_fsoFiles function
Dim rsFSO 'now let's call the function and open the recordset
'we will exclude all files beginning with a "_"
Set rsFSO = kc_fsoFiles(strFolder, "-")
'now we'll create a loop and start displaying the folder
'contents with our recordset. Of course, this is just a
'simple example and not very well formatted, i.e., not in
'a table, but it gets the point across on how you can
'ouput the recordset on the page.
%>
<p><font face="Arial, Helvetica, sans-serif"><b>Documentos disponibles:</b></font></p>
<table width="65%" border="1" align="center">
<tr>
<td width="68%">
<div align="center"><font face="Arial, Helvetica, sans-serif"><b>Nombre</b></font></div>
</td>
<td width="32%">
<div align="center"><font face="Arial, Helvetica, sans-serif"><b>Tipo de
Archivo</b></font></div>
</td>
</tr>
<%
While Not rsFSO.EOF
enlace = "../../datosred/" & rsFSO("Name").Value
%>
<tr>
<td width="68%">
<div align="center"><font face="Arial, Helvetica, sans-serif" size="2"><a href="<%=enlace%>"><%= rsFSO("Name").Value %> </a></font></div>
</td>
<td width="32%">
<div align="center"><font face="Arial, Helvetica, sans-serif" size="2"><%= rsFSO("Type").Value %></font></div>
</td>
</tr>
<%
'and let's move to the next record
rsFSO.MoveNext()
Wend
%>
</table>
<%
finally, close out the recordset
rsFSO.close()
Set rsFSO = Nothing
%>
</body>
</html>
