We should be able to locate the registration keys on any machine the product is still installed on. Let's try something easy before we go into the registry.

A great tool for investigating your machine is Belarc Advisor. You can learn a lot about your machine by using this program, including the license attached to any software.

The personal edition is free, while the different programs used for commercial purposes and networks will cost you a little. The personal edition will handle your personal needs with ease. Not only will it expose the programs installed, but it will tell you everything about the hardware components that your machine was built with. You can print the inventory list for your files. Before going to the store for new goodies, you can bring this and always buy the right products for your machine, too!

You should be able to move any media files to the new drive and free up plenty of room for operating both programs and leave enough to run maintenance tools (disc clean-up, disc defrag, etc.).