Problems with hosts, please help me!

[mailindigo]

Hello, I�ve installed Tomcat on Windows NT and it runs when I use the name of the machine in the URL (example: "http://server/examples/jsp/index.html"), but it doesn�t run when I use the internal or external IP (e: "http://192.168.167.2/examples/jsp/index.html" or "http://200.56.130.196/examples/jsp/index.html"). I would thank if you could help me.