So it used to be in 10.4 that if one put 1) "DHCP Client ID" under System Preferences => Network => Ethernet 2) Matched above under System Preferences => Sharing => "Computer Name" all would be well. But unless there is something quirky that changed on the Windows side I cannot seem to entirely hook up the network. I can receive an IP from the DHCP just fine. But I cannot seem to get the DHCP record to push to the DNS. Thus I have no PTR or APR. So no one can nslookup or host my machine name. In fact if someone else had the same IP before, the host <IP> returns the previous user's machine name. Any ideas to tell the system administrators. *Note: My employer doesn't officially support Macs which is why I'm asking and not the system administrators.