In Windows Server 2008 core edition we do not have a GUI anymore. Only a command prompt, (oh and by the way, for those who did not know this yet, no powershell)
Here is a list of "(window based) Tools" still available in server core (it is not meant as a complete list, but just a list of the things I fount, so feel free to add items to the list by commenting to this item.
- Regedt32/regedit
- msinfo32
- notepad
- syskey
- sysprep