Windows Server Core 2008 R2 - Help tip #1 - Server Default Name
This might be simple, but also tricky if you don't know where to look for. Once installed, Server core has a default name assigned.
To get it , just run ipconfig /all in the command line.
The first line will include the server's default name.
Now, if you want to change it or join it to a domain , follow this post. http://blogs.techrepublic.com.com/datacenter/?p=594