Just so this is updated as of BOE 4.1 SP5 the latest Data Direct drivers are supported and will be distributed in BOE 4.2 for universe creation
Its important to note that the driver will use a system account. if you need to pass the authentication of the user logged in to get their data based on their roles and rights we have a solution for that at launchworks.com
For a little more understanding on all the integration options both front end and backend I have a notes here
kmcmanus (BOB member since 2005-09-02)