This seems pretty trivial but it's not clear to me how to do refer to
range object in an external source.

I want to access and use a named Range in a second workbook. I'm
thinking that I can declare a Range variable in my ActiveWorkbook and
set that equal to the external range. So:

Say the primary Workbook is Model.xls and the one I want to access is
Data.xls, and the Data named Range is DRange

So in a Model module

Sub Something()

Dim rng as Range
Set rng = Workbooks("Data.xls")...Range("DRange")

But I don't know how to finish the line.

I know I'm not asking for clever, only mundane. But if you could help
that would be great.

Thanks,

SteveM