We are going to migrate from SBS 2003 to Windows 2008 Server. In out domain today the SBS 2003 is domain server and then we have a Windows server 2003 as the dc number two. We are also planning to migrate Exchange in the SBS Server to Exhange 2007.We are expanding and the number of users will be round 100 in the near future. What is the best way to migrate to Windows 2008 Server? Is it possible to use the second dc, the 2003 Server, and set up a new domain with the same domain name, join the new 2008 Server to it and let the new server become the new pdc? If this is possible, then continue with taking down the SBS 2003 and put in the new 2008 Server in the old domain. Is this possible or not?