AVD cannot be created Ok is disabled

Issue

I have eclipse juno 4.2.1 Android SDK already installed, I've created an Android application and while creating new AVD the Ok button is always disabled although I've determined all it's specifications

here is the specifications I've entered

I don't know why Any ideas! Thanks.

Solution

No system Images You installed,

Go to window->Android SDK Manager, and download System images for avd for that specific target

Answered By - Charan Pai