The warp stabilizer was introduced in CS 5.5. You can stabilize footage using the regular AR tracker tools but stabilizing and warp stabilizing are completely different animals. You can also do various types of stabilizing using Mocha. What exactly are you trying to do? If you are trying to "warp stabilize" then you need to upgrade or purchase some third-party software.
Awesome, thank you! I went ahead and got the creative cloud and installing all new awesomeness!