To make the development and testing easy, I added 3 web sites to the SingleSingleOnResearch as given below:
1) SingleSignOn.Administration (this site is going to have all administrative interfaces in the future)
2) FirstWebSite and
3) SecondWebSite
All the above 3 sites will have the Login page and then allows you to browse to rest of the two sites without re-login. So, please try and let me know your comments and suggestions.
Source Code at: http://sso.codeplex.com