http://blogs.technet.com/b/benw/archive/2007/12/03/exchange-2007-sp1-setup-domain-controller-requirements.aspxOK. I've heard lots of complaints about Exchange 2007 and the fact that when you run setup, the pre-requisite checks will fail if you have multiple domains in your forest, and one of those domains doesn't have a Windows 2003 SP1+ domain controller. ThatenTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/benw/archive/2007/12/03/exchange-2007-sp1-setup-domain-controller-requirements.aspx#2651313Sun, 16 Dec 2007 15:23:46 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:2651313subject: exchange<p>Exchange Admin 101: Exchange 2003 and Exchange 2007 admin privileges Troubleshooting Exchange Global</p> <img src="http://blogs.technet.com/aggbug.aspx?PostID=2651313" width="1" height="1">