I'm trying to install conference Center on a Windows 2003 Server machine and when I tried to install the SQL Server Desktop Engine I get an error "The Instance Name Specified is Invalid" and the installation gets cancelled. I tried installing the Conference Center software bypassing the SQL installation but when it gets to the part where it should ask for the IP address for the Control Unit and a Username and Password it doesn't do it, it just shows the window that says the installation is completed and the "Finish" button but it never asked for the IP Office address. Any help would be appreciated.