Downloadable book for Sharepoint 2007

A great book for Sharepoint 2007 deployment project. Contains all upgrade scenarios and do's and don'ts. Must require before beginning any Sharepoint 2007 deployment. http://technet2.microsoft.com/Office/en-us/library/900143fd-5397-4fa2-92ad-5af4c116ee7d1033.mspx?mfr=true