Good Examples for Report Building Options?

I'm currently working on the IA for a web app that allows users to
select from several options to build a report.
The hierarchy of options is thus:
Client has one or more Campaigns
A Campaign is made up of one or more Elements
An Element has one or more Tags

Where the end user can choose one or more clients, campaigns,
elements, and tags.

Any links or examples would be appreciated.

Thank you,

Ron Akanowicz
Usability Consultant
softerwareconsulting.com | ron at softerwareconsulting.com | 786-853-1666