grrr... our phone support, sigh...
The correct response from the phone support should have been to direct you to the support portal
http://www.adobe.com/support/digitaleditions (click on 'Submit a web case') as this is the only supported method (and you'll get people that actually understand the problems), unfortunately some times the phone support team tries to be helpful within their limits (and fails).
@Dulin's Books
The last ADE update was 1.7.1 released in April 2009, has it been that long since you launched?