I found some code on an ancient message board that nicely exports all of the VBA code from classes, modules and forms (see below):
Option Explicit
Option Com
another way is keep most used code in one external master.mdb and join it to any count of *.mdbs trough Modules->Tools->References->Browse->...\master.mdb
the only problem in old 97 Access you can Debug, Edit and Save directly in destination.mdb, but in all newer, since MA 2000, 'Save' option is gone and any warnings on close unsaved code