That's exactly the way I have it set up. I also have other forms that have the same combo set up that may or may not be open; depending on whether the user has that form open already or not.
I have a typical Access 2007 database with a main form that has combo boxes that are populated by other tables. To edit or add to the combo boxes I have separate forms. When I make the changes I want the combo boxes to be refreshed. I would imagine I can do it with a FormName.Refresh command...
I am using Access 2007 with Windows XP. I have a scatter chart embedded in a form that is plotting data from a subform with a trendline that is extracted and used on the form for calculations. After having the table set up correctly and running fine, I closed the database and then reopened it...