Edit hosts files in Windows Vista

By default a normal user doesn't have permission to edit the hosts file Windows Vista. To edit the hosts file you need to run Notepad as an administrator - right click Notepad and select 'Run as Administrator' then open and edit the hosts file (C:\Windows\System32\Drivers\etc).

Sources

• http://geekswithblogs.net/thibbard/archive/2006/12/13/ChangingYourHostsFileInVista.aspx