Authentication to a W2k Server w/Active Directory

:( I have a Mac lab at a school that I am working with and I am trying to set up authentication to the Windows 2000 Server that they have in place. The Macs are all running OS 10.2. I have followed the article "Active Directory integration in Three Hours or Less" step-by-step but I still cannot authenticate. I have recreated the Directory Services entry acouple of different times and I have verified the static mappings through ADSI for correct spelling ect. Every time I do a lookupd -d for allusers, I only get local user information returned. I am new to Macs so some of the language is a little confusing but I know I should be able to get this to work. I can connect to the W2K server if I go to Connect to Server and authenticate that way but my clients would prefer only one logon. HELP!!!!! Deanna