Custom Report for All Changed Rqmts/TCs from a previous Date

I would like to generate a custom report that shows all of the changes to requirements since a particular date.  The report would identify the requirements changed and the changes made.  Since SpiraTest shows the history of these artifacts  - I would assume that I could extract and organize this information into a customized report.

I would also like to be able to do the same with Test Cases.

Can anyone provide me with some details on how this might be accomplished?  

Thanks.