create a host file with Mac OS X, follow these steps: 1. Open the /Applications/Utilities folder path, and then double-click NetInfo Manager.
2. In the Directory Browser, click the /machines directory. On the Domain menu, click Security, and then click Authenticate. You may be prompted to enter your administrator password. If Deauthenticate appears on the submenu, administrative permissions are already applied.
3. On the Directory menu, click New Subdirectory. A new item labeled new_directory appears.
4. In the Value(s) column of the lower window, double-click new_directory, and then type the name of the server to which you want to link an IP address.
5. On the Directory menu, click New Property, and then replace new_property by typing ip_address.
6. On the Directory menu, click New Value.
7. Replace new_value with the IP address of the server to which you want to connect.
8. On the Domain menu, click Save.
9. Click Update this copy, and then quit NetInfo Manager.
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