While it's a long way off for a lot of companies, IPv6 is slowly but surely making its way into products. Its use was experimental in Windows 2000, but Windows Server 2003 features a full, native IPv6 stack.
But because IPv6 is still finding its way onto networks, it's not a default installation. To install IPv6, follow these steps:
IPv6 doesn't offer the nice graphical interface that you enjoy for your IPv4 configuration. Instead, you can configure IPv6 via a new command-line shell called netsh.
You can invoke netsh from the command line either with or without options. When invoked with options, netsh carries out the requested operation. Invoking netsh without any parameters will take you into a shell from which you can get a full list of netsh commands by typing ?.