create user

Thx Gertjan

In the lastest OpenSUSE 10.3 installer (0.2.1, will be online in one or two hours) the phrase to add the test user is:

/opt/open-xchange/sbin/createuser -A oxadmin -P secret -c 1 -u testuser -d "Test User" -s "User" -g "Test" -p secret -e testuser@$DOMAINNAME

Hello,
sorry for my english
Euh... I want to add a new user but when i write on the shell adduser or an other command, i have an error like this" command not found". I see in the folder /opt/open-xchange/sbin/, files like createuser creategroup but neither createuser nor creategroup are been recognized.
I've have Suse 10.3 and hyperion. I set up with the installer.
What's wrong ? thanx you guys!