I have a Workbook which has an Auto_Open Macro. The Auto_Open macro displays
a dialogbox which asks "Open as Read Only" or "Edit File". If they select
Open as Read Only I want one of two things. Either make the Workbook Read
Only or disable their ability to save the Workbook.

If they select Edit File, they are asked for a password and then taken into
the Workbook where they are allowed to make and save changes (this part is
working fine).