New ASP login problems

I need to change this login, it's just flat out terrible. It won't let me login site wide. It just authenticates the user to access one part of the site and I just want it to last for everything site wide.

In Login.php
<%
' *** Validate request to log in to this site.
MM_LoginAction = Request.ServerVariables("URL")
If Request.QueryString<>"" Then MM_LoginAction = MM_LoginAction + "?" + Server.HTMLEncode(Request.QueryString)
MM_valUsername=CStr(Request.Form("userName"))
If MM_valUsername <> "" Then
  MM_fldUserAuthorization=""
  MM_redirectLoginSuccess="welcome.asp"
  MM_redirectLoginFailed="login.asp?valid=1"
  MM_flag="ADODB.Recordset"
  set MM_rsUser = Server.CreateObject(MM_flag)
  MM_rsUser.ActiveConnection = MM_connBastech_STRING
  MM_rsUser.Source = "SELECT users_email, users_password"
  If MM_fldUserAuthorization <> "" Then MM_rsUser.Source = MM_rsUser.Source & "," & MM_fldUserAuthorization
  MM_rsUser.Source = MM_rsUser.Source & " FROM bastechc.users WHERE users_email='" & Replace(MM_valUsername,"'","''") &"' AND users_password='" & Replace(Request.Form("password"),"'","''") & "'"
  MM_rsUser.CursorType = 0
  MM_rsUser.CursorLocation = 2
  MM_rsUser.LockType = 3
  MM_rsUser.Open
  If Not MM_rsUser.EOF Or Not MM_rsUser.BOF Then 
    ' username and password match - this is a valid user
    Session("MM_Username") = MM_valUsername
    If (MM_fldUserAuthorization <> "") Then
      Session("MM_UserAuthorization") = CStr(MM_rsUser.Fields.Item(MM_fldUserAuthorization).Value)
    Else
      Session("MM_UserAuthorization") = ""
    End If
    if CStr(Request.QueryString("accessdenied")) <> "" And false Then
      MM_redirectLoginSuccess = Request.QueryString("accessdenied")
    End If
    MM_rsUser.Close
    Response.Redirect(MM_redirectLoginSuccess)
  End If
  MM_rsUser.Close
  Response.Redirect(MM_redirectLoginFailed)
End If
%>
 
Authentication Script stored in each page (which after you access that page you only for some reason can access that authentication restricted page then login again)
 
<%
' *** Restrict Access To Page: Grant or deny access to this page
MM_authorizedUsers=""
MM_authFailedURL="login.asp"
MM_grantAccess=false
If Session("MM_Username") <> "" Then
  If (true Or CStr(Session("MM_UserAuthorization"))="") Or _
         (InStr(1,MM_authorizedUsers,Session("MM_UserAuthorization"))>=1) Then
    MM_grantAccess = true
  End If
End If
If Not MM_grantAccess Then
  MM_qsChar = "?"
  If (InStr(1,MM_authFailedURL,"?") >= 1) Then MM_qsChar = "&"
  MM_referrer = Request.ServerVariables("URL")
  if (Len(Request.QueryString()) > 0) Then MM_referrer = MM_referrer & "?" & Request.QueryString()
  MM_authFailedURL = MM_authFailedURL & MM_qsChar & "accessdenied=" & Server.URLEncode(MM_referrer)
  Response.Redirect(MM_authFailedURL)
End If
%>

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