Version Updates

Sorry for repeating this - previous question was in the wrong forum.

I am writing an application in Access 2000 which travelling employees will
load onto their laptops. As they do not have the Access program loaded, they
will use Runtime.

I anticipate that revisions will be needed over time. Updates might be
changes to forms & macros, new forms & macros, data changes, extra fields in
tables (must not overwrite existing data)

The employees are not techie people and applying an update must be as easy
and straightforward as possible.

Is there a standard way of coping with Updates to the program?

Would I be better off splitting the database into front and back ends?