In theory, you *should* be able to, but you would be on your own. You'd just have to add a new /etc/httpd/conf/httpd.conf to work with 2.0, and then just make sure that the templates and "Include ..." lines will work. But we won't offer any support on it. Also remember to turn "OFF" httpd in the /usr/local/directadmin/data/admin/services.status file if the program name isn't the same as apache 1.3.x (httpd). This will prevent DA from trying to ensure the old version is running.