A new "Intra-site Automatic Tunnel Addressing Protocol Deployment Guide"
white paper has been published at:

http://www.microsoft.com/downloads/details.aspx?FamilyID=0f3a8868-e337-43d1-b271-b8c8702344cd&displaylang=en

Intra-site Automatic Tunnel Addressing Protocol (ISATAP) support in the
Microsoft Windows Server 2003 and Windows XP with Service Pack 2 operating
systems allows you to deploy Internet Protocol version 6 (IPv6) connectivity
on an existing Internet Protocol version 4 (IPv4) network without having to
configure or upgrade existing routers to support native IPv6. This white
paper describes how ISATAP works, how to deploy ISATAP with Windows-based
ISATAP hosts and routers, and additional ISATAP deployment considerations.