We have a large number of multipotal sites that have their own local events they manage. 

We would like to add a few Global Events to all of these Calendars. 

If i created a sql script or a module that would write a new record in the Events Table for each module id.

would this create problems.  As far as my tests show I cannot see any problems in doing this. 

What would be the best way to include images to this scenario?