LDAP authentication in website

Got a requet from a client to provide LDAP authentication in exisiting ASP website, in plain terms authenticate users using thier domain id and password. Initial thought of intergrated win auth was ruled out 'coz of Kiosk based computers used. Should make sure we SSL the page.

'ASP code
Const ADS_SECURE_AUTHENTICATION = &H1
On Error Resume Next
Err.Clear
Set dso = GetObject("LDAP:")
Set domain = dso.OpenDSObject("LDAP://server.com", strUserName, strUserPassword, ADS_SECURE_AUTHENTICATION)
If Err.number <> 0 then
Response.Write("Invalid login. Err.number=" & Err.number)
Else
Response.Write("Valid login. Err.number=" & Err.number)
End If
Set dso = Nothing
Set domain = Nothing

Also same functionality in ASP.net 1.0 http://support.microsoft.com/?id=326340.