***PTS does not support the Android SDK /Emulator *****
To install the emulator you need to install the android sdk.
You can find it here.. http://developer.android.com/sdk/index.html#download
After installation you should be able to start the emulator by using the 'AVD Manager' in your start menu.
The Andriod Emulator is a way to see your project deployed without having an Android device. It is seen on your PC.