Edit your \Required\resources\common\StandardResources.py file.
Find this section in the file:
["edu.cmu.cs.stage3.alice.core.behavior.KeyClic kBeh avior",
["keyCode",
java.awt.event.KeyEvent.VK_SPACE,
java.awt.event.KeyEvent.VK_ENTER, ...
Add the items/keys you want.
If you are not sure of the keyCode, refer to
http://docs.oracle.com/javase/7/docs.../KeyEvent.html
Repeat for (if needed):
["edu.cmu.cs.stage3.alice.core.behavior.KeyIsPr esse dBehavior",
["keyCode",
java.awt.event.KeyEvent.VK_SPACE,
java.awt.event.KeyEvent.VK_ENTER,...