I try to migrate to GCM and I have an issue with the SENDER_ID I need to provide. I use the demo project from google. In this project I need, if I
GCM
SENDER_ID
Go to "Dashboard" in the latest version of the developers console, click the drop down arrow under "Project: Turtle Power" and you can see the Project number right there! Use that as your SENDER_ID
(fake project so don't even try it =P)