Yeah me too I have that problem as well
You can't find your x y z coordinates... unless you want to try /location in chat?
I clicked on the pictures and looked at the screenshots... I don't know if it's outdated though, some things seemed to look different, like I couldn't find the small rad town for ages.
Otherwise you can use
http://www.rustnuts.com/ as a test for location.
But you need to join a particular server that supports this mod (Press F1 and time net.connect IP address or something, imitate the command you get when you connect to a server). follow the links on the page to find servers that support the mod.
When you log onto the server, type /location in chat.