You've asked this question on the forum before, and the answer is pretty much the same.
Version 3 is 10 years old and is no longer officially supported. It's possible that Main Concept, the company that once provided and activated this component, is no longer offering it. So, if this is the first time you've used the program since 2006, it may not be available to activate the DVD components.
I'd recommend picking up a more recent version of the program. If you don't want to pay full price for the current version, you'll likely be able to find used or older versions of the software on eBay or Amazon very cheap.