how do i change the units of measurement in the New Document set-up box? I want inches versus metric.
Preferences / Units and increaments.
If you set this with no document open it will be the default for all new (new, not existing) documents.
The next time you create a new document you will also see this change in the New document set up.
and to use units other than those set in the prefs you can always type in the complete value including the unit.