Invalid command 'SuexecUserGroup'

[Zulzig]

Hello from France,

First, I would like to say a great thank for all tutos which you post on your website.

I watch this topic "The Perfect Server - Debian Lenny (Debian 5.0) [ISPConfig 3] ". I've been confronted in front of a problem that I don't arrive to resolve. Before to post a new thread, I looked in the forum, if someone had the same problems as me.
My problem: after to setup ISPconfig3, apache doesn't want to start.

messages errors:
debian:/etc/apache2/sites-enabled# /etc/init.d/apache2 start
Starting web server: apache2Syntax error on line 15 of /etc/apache2/sites-enabled/000-ispconfig.vhost:
Invalid command 'SuexecUserGroup', perhaps misspelled or defined by a module not included in the server configuration

thank for your help
My OS : Debian Lenny