It seems you have some experience with excel, right?
With A nice build relational database, everything is possible.
Make 2 tables, "tblData" and "tblGroup".
Each table has (e.g.) a field ID (number, long) and a name (text, varchar).
The 1th table also has a field Group_ID.
Then make a query where you join both tables together;
add both tables and double click on the stars in the tables (to add all
fields)
Then drag Group_ID field to ID field from tblGroup.
Now there exists a link between two tables.
If you generate a report with use of a wizard, the wizard will automatically
ask on which field you want to "group". Choose the "name" of the tblGroup.
Like this the report will automatically have all data in groups.
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Kind Regards
Damiaan
e: info at dampee.be
w:
http://www.dampee.be