About the Provided MS Access-based Policy Store
The ColdFusion 5 installer installs an initialized MS Access Policy Store which you can use to explore basic Advanced Security functionality in the ColdFusion Administrator. Customers are strongly cautioned against using MS Access as a permanent Policy Store location, since the use of MS Access with SiteMinder is known to produce unpredictable results due to asynchronous database update problems. Macromedia strongly recommends customers to switch the active SiteMinder Policy Store from the default provided MS Access DB to a Microsoft SQL Server database, Lightweight Directory Access Protocol (LDAP) directory, or Oracle Server database.

The "Start Security Wizard" link below will launch the Policy Store Initialization Wizard that will walk you through the process of initializing a clean Coldfusion 5 Advanced Security policy store on an enterprise-level database.

Alternatively, the steps documenting the process used to convert the Policy Store to another format can be found here for ODBC Policy Stores and here for LDAP Policy Stores.