Backup Domain Controller document

Write up a document showing step by step how to? replicate 2 servers (Windows Small Business 2003 and Windows standard server 2003 and both servers being small business 2003) . Need to outline how to setup active directory, exchange and all other features of the server so that if the main server goes down then the secondary server will automatically start taking requests. If not automatically possible then what are the steps to minimze down time. Document should be clear to read and understand. Payment will be released once document is satisfactory in setting up a Primary/ Backup domain controller, active directory and other services.