GCE (Google Compute Engine) is a service run by Google for creating virtual
systems that run on their network, for which users are charged by the
machine-hour. Cloudmin can be used to create and manage GCE instances, just
like it can for virtual sytems that run on your own hardware. However, before
you can use GCE you must first register for an account at
https://cloud.google.com/products/compute-engine/.
Once you've created a GCE account and at least one project, register it on
this page by clicking on the Add a GCE project link. To manage an
existing project, click on its description in the list. To remove projects,
select the checkboxes next to them and click the Delete Selected
Projects button. You will not be able to remove projects that are in use
by any virtual systems though.