Any other computers in the house you could try?
Still sounds like a firewall issue. You might have not hit 'allow access' for Windows Firewall when you first started Blockland. Or your router firewall might block it (no idea why that would be).
skiggo here and tell me what it says, assuming it appears to load: http://auth.blockland.us
It just shows a blank white screen with http://auth.blockland.us in the top left corner
I'm working on a script. What is the port for auth requests?
It might be 80 but I could be wrong. I just read it from a post Badspot made on a similar topic to this one.
Here it is http://forum.blockland.us/index.php?topic=197318.0