Yes, anyone can install from tar.
I have installed on another SME7 in 10 minutes or less.
Let´s try a HowTo DRAFT:
(updated!)1) Create an zabbix user (using LAT or server-manager)
2) download my tar
http://www.linuxfacil.net/publico/files/Zabbix-1.1.1.tar or from
http://khunjarnet.com/downloads/zabbix/Zabbix-1.1.1.tar (thank Jon)
3) copy files from opt to /opt and etc to /etc
4) create fragments to Apache
mkdir -p /etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf/
cat >>/etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf/80zabbix <<FIM
Alias /zabbix /opt/zabbix
<Directory "/opt/zabbix">
AddType application/x-httpd-php .php .php3 .phtml
Options FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all
</Directory>
FIM
/sbin/e-smith/expand-template /etc/httpd/conf/httpd.conf
service httpd-e-smith restart
5) create MySQL database and populate it
mysql < install/create_mysql
mysql zabbix < install/schema.sql
mysql zabbix < install/data.sql
6) edit /etc/zabbix/zabbix_[server/agentd].conf and verify if everything it´s ok
7) start Zabbix_server and agentd
/opt/zabbix/bin/zabbix_server
/opt/zabbix/bin/zabbix_agentd

Access web interface and log in as admin with no password
I´ll install again and do a NICE HowTo... someday!

Jáder