Resource Driven Activities vs Task Driven Activities & how it effects Original Duration

Thanks Mike...

If an Activity is Task Driven the Original Duration for that activity may be 4 as displayed in the original duration field.  Change the activity to Resource Driven and the original duration as displayed will change.  I know why it changes, but what I am trying to do is to get it to display the 4.  The client wants to see the "Activity Original Duration" not the "Resource Duration".  I have a very difficult time trying to write and explain what I am asking.  It is a big weakness.  If you can understand me, I would appreciate any help.  Thanks