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I found this on a ford tech website
Note 1: These DVD discs, which were produced in August of 2003 and later, have a time limit incorporated into the program. Therefore, each time you run the program you must change the date in your Windows System temporarily to enable the application to launch.
To do that, simply double-click on the time at the bottom right of your Windows screen. When the calendar appears, set it back to the version number of your disc.
Example: If your disc is a 2004-2005 and its version date is August 2004, you would set your calendar's month and year to August, 2004. You can leave the date alone. Then when you are finished using the program, you should just reverse the steps you took above. It only takes a few seconds and it is the only way for those affected discs to operate properly.
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