How to implement Single Sign-On for Salesforce with Google App Engine ?

I wanna intergrate SSO between Salesforce and Google App Engine (Java).

Followed all steps in Google App Engine set up but I'm trouble finding where to enable SSO in Salesforce.

http://code.google.com/p/sfdc-gae-sso-delegated-auth/wiki/Setup

How can i do this ? Gimme easy steps.

Thanks in Advance :)

I wanna intergrate SSO between Salesforce and Google App Engine (Java).

Followed all steps in Google App Engine set up but I'm trouble finding where to enable SSO in Salesforce.

http://code.google.com/p/sfdc-gae-sso-delegated-auth/wiki/Setup

How can i do this ? Gimme easy steps.

Thanks in Advance :)