ASP.NET Single Sign On CrossDomain with OneLogin and DotNetOpenAuth

I am working on a project requiring a single sign for cross-domain (non-sub-domain) authentication for 2 websites.

I searched for what others said here and on the Internet and tried to use DotNetOpenAuth, but I can’t interpret it, and the documentation doesn’t help much. So I turned to OneLogin , which seems to provide what I want, but again, the documentation is missing. I think I need to use both of them, but I cannot connect the pieces of the puzzle.

I'm getting closer to implementing my own SSO solution based on Unified Security for Web Applications , but you want to avoid this as it will take much longer and be more error prone than using an existing solution.

So now for some questions for all gurus:

• Can you shed some light on how to use DotNetOpenAuth to authenticate users in OneLogin?
• Where can I get some more examples for OneLogin?
• As for DotNetOpenAuth for those who tried the VS2010 project template, did it make RelyingPartyLogic.dll compiled or missing? Where can i get this?

Thank you for your help!