A good message always bears repeating ...
Visit the IBM Rational License Key Center for lots of useful material on understanding and using your Rational license keys:
Are you new to Rational?
Watch the Rational OnDemand video for an introduction to downloads, license keys, and support (13:24)
Activation Kit Video New
The new Downloading Activation Kits video steps you through downloading your activation kit for RTC, RQM, RAD, RSA and other Rational products (9:27)
Basic Training Videos
Module 1 - What is the Rational License Key Center? (2:35)
Getting Started with Licensing and PA Guide The new Getting Started Guide (.pdf) covers the most basic of licensing questions to advanced topics for power users. Our goal is to help you efficiently deploy your Rational tools.
Rational Downloads Visit IBM Passport Advantage Online for product downloads and for ordering media.
Rational License Servers The license server manages your floating license keys. Visit this technote to learn about compatibility and where you can get the server.