Fejl ved skrivning til database

Hej jeg har problemer med at opdatere min database via asp.

Her er fejlen:

Error Type:
Microsoft OLE DB Provider for ODBC Drivers (0x80004005)
[Microsoft][ODBC Microsoft Access Driver] Operation must use an updateable query.
/bif/admin/opdater.asp, line 53


Browser Type:
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 1.0.3705)

Page:
POST 53 bytes to /bif/admin/opdater.asp

POST Data:
txtinfo=456&cmdOpdater=Opdater&kommando=opdater&id=11



Her er min kode:

<%@language=vbscript%>
<% Response.Buffer= true%>
<html>
<head>
<title>Retning</title>
</head>

<body>
<%
'on error resume next
if Request.Form("kommando") <> "opdater" then

    Set con = Server.CreateObject("ADODB.Connection")
    con.Open "DRIVER={Microsoft Access Driver (*.mdb)};;DBQ=C:/inetpub/wwwroot/bif/admin/database.mdb;"

    SQL_query = "SELECT * FROM Info WHERE id=" & Request.QueryString("id")
    set rs = Con.Execute(SQL_query) 
   
%>
<p>Skriv teksten enden for</p>
<form method="post" action='<%=Request.ServerVariables("SCRIPT_NAME")%>' name="brugerdata">
  <table border="0" width="100%">
    <tr>
      <td width="1%">Info tekst:</td>
      <td width="59%"><input name="txtinfo" size="30" value='<%=rs("tekst")%>'
    ></td>
    </tr>
    </table>
  <p><input type="submit" value="Opdater" name="cmdOpdater"></p>
  <input type="hidden" value="opdater" name="kommando">
  <input type="hidden" value='<%=rs("id")%>' name="id">
</form>

<%
    rs.Close
    con.close
    set rs=nothing
    set con=nothing
   
else
 
  'Opret et Connection-objekt
    Set cn = Server.CreateObject("ADODB.Connection")
    cn.Open "DRIVER={Microsoft Access Driver (*.mdb)};;DBQ=C:/inetpub/wwwroot/bif/admin/database.mdb;"

'Gem formulardata
id =Request.Form("id")
fn    =Request.Form("txtinfo")

strSQL=          "UPDATE Info SET tekst='" & fn & "'"
strSQL= strSQL & "WHERE id=" & id

cn.Execute(strSQL)
cn.Close
set cn=nothing
Response.Redirect "dbadgang.asp"
end if
%>
</body>
</html>