>In the report designer how would I go about building a report with the following structure:
>
>
> database1
> ---------
> totaldatabase1
>
>
> database2
> ---------
> totatdatabase2
>
>
>
>I've tried data grouping but it only nests one data group in another.

Do both tables have same structure? If yes, why not:

Select Database1
Report Form Myreport Noconsole To Printer
Select Database2
Report Form Myreport Noconsole To Printer

Provided that the report elements references field names only.