For all the LDD users out there, be prepared to put your software to rest.
As of March 23, 2012, Land Development Desktop will be retired for good!! I strongly recommend getting upgraded before this date. You can get upgraded to Civil 3D for a really cheap price. After March 23, 2012, you will pay a significant amount more to upgrade.
There are several videos out there to help you with your transition to make it smooth and painless.