Tim
I suspect we're having a discussion about semantics.
Access reports can have unbound controls on them. Those controls do not
have a field/data source that comes from a query or a table. A listbox is a
useful control ... on a FORM, in which you can use the listbox to select an
item.
Reports are intended for print-out purposes, so putting a listbox on a
report doesn't make much sense (you can't select an item on a paper report
and expect anything to happen <g>).
"How" depends on "what", and I still don't understand the "what" ... what
data structure does your [Regions] table have? Are you saying that there
are only two fields, [RegionID] and [Yes/No]?
Are you saying you want to see which regions are marked "Yes"? You can do
that with a query. I suppose you could even use that query as the data
source for a listbox control in a report (but this is, again, not the
standard, recommended usage of a listbox control).
Good luck!
Regards
Jeff Boyce
Microsoft Office/Access MVP