how can ii tell a field to sum other fields, average
other fiels an do simple spreadsheet typr formulas?
You can't, and you shouldn't.
Access IS NOT A SPREADSHEET. It's a relational database. *They are
different*. Applying spreadsheet logic to a database will just get you
into some extremely bad designs! "You can drive nails with a crescent
wrench, but that doesn't make it a hammer" - if you want to do
spreadsheet calculations, use Excel, it's very good at it.
You can do calculations in Access Queries, but not in Tables. Tables
should store only "real" data; calculations and formulas should be
done in Queries, on Forms or Reports (as the control source of
textboxes), or in VBA code; or you can calculate Totals using a Totals
query or a Crosstab query.
John W. Vinson[MVP]