Open an existing page in text area automatically

Something like this could work, i have something similar but just copied and
edited little quick for you to get an idea.
<%
 Dim strFormName
 Dim strTextAreaName
 strFormName = "bForm"
 strTextAreaName = "myTextarea"

 %>
<!-- include the Web Wiz Rich Text Editor -->
<!--#include file="RTE_editor_inc.asp" -->
        
<textarea name="textarea" cols="75" rows="22" id="myTextarea">
    <%
    'Read a file and write it to textarea.
    Set fs=Server.CreateObject("Scripting.FileSystemObject")
    Set f=fs.OpenTextFile(Server.MapPath(page to open), 1)
    response.write f.ReadAll
    f.Close

    Set f=Nothing
    Set fs=Nothing
    %>
</textarea>