It doesn't make any difference what you do to the permissions in the security dialog.
You will not be able to change the tables or data no matter what permissions you grant, and you can already read the data without the permissions being set.
Scott McDaniel (EE MVE )
<If I export the tables to a fresh access db, I have no problems doing the procedure to the MSysRelationships, etc tables.>
As peter said, you cannot alter permissions on those tables ... I'm not sure where you got those "instructions", but they are wrong.