Script

# Define a host for the local machine

define host{
        use                     linux-server            ; Name of host template to use
                                                        ; This host definition will inherit all variables that are defined
                                                        ; in (or inherited by) the linux-server host template definition.
        host_name               $val
        alias                   $val
        address                 $val
        }

###############################################################################
###############################################################################
#
# SERVICE DEFINITIONS
#
###############################################################################
###############################################################################
# Disable notifications for this service by default, as not all users may have HTTP enabled.

define service{
        use                             generic-service         ; Name of service template to use
        host_name                       $val
        service_description             HTTP
        check_command                   check_http
        notifications_enabled           1
        }













places marked with $val need to take a text file with entries sperated by line breaks. ie
agesafely.com
website.com
website.com
website.com


and create a file $val.cfs. ie website.com.cfg 
Each of the website names will be different obviosly