I found dcdiag on windows server 2003 disc (support>tools). Tried to run it but it shuts itself down. Installed it on the machine and tried to run it from there. Same problem though.
It's like it starts and says "Doing initial required tests. Testing server: Default-First-Site\Brunnner-Server
Starting Test: Connectivity"
and then all of a sudden the whole shell disappears?????