To edit the required file...
mkdir -p /etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf
cd /etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf
cp /etc/e-smith/templates/etc/httpd/conf/httpd.conf/80Aliases00
pico 80Aliases00
The best way to tackle the changes is probably best answered by somebody else but this should at least get you started in the right area...
Regards,
Luke