If you can specify that the commands run as root from Apple Remote Desktop, you do not need "sudo" in the installer command.
The .aex-agent-install-config.xml file specifies an installation directory of /Applications/Utilities/Altiris/NSAgent.
The aex-agent-install-config.xml file is obtained on the Notification Server console in the Altiris Agent Installation, install Altiris Macintosh Agent screen, under "Installation settings". By default, the file begins with a dot (.) and is hidden on UNIX/Linux/Macintosh systems. In this example, the dot was removed to facilitate transferring the files between systems.