Question : Sharepoint 2010 - 2 domains and non domain users

I am looking for an article, or some direction, on how to configure a SharePoint 2010 site to use users from the domain SharePoint is in, a trusted domain to the one it is in, and some non domain users.

I saw a few things but nothing that gave me a definitive answer.

Is this possible?  If so, how would the configuration need to change as I can now only add domain users from the domain the server is in.

Answer : Sharepoint 2010 - 2 domains and non domain users

First thing is, the domain that SharePOint is in must trust the user domain.  

You must enable your peoplepicker to look into that domain (if it's in another forest).  See this article: http://technet.microsoft.com/en-us/library/cc262051(office.12).aspx

As far as non-domain users....I'm not really up to speed on the claims based security in 2010.  In 2007 you would need to extend your web app, use FBA authentication, and set up some sort of user repository for them (such as SQL or ADAM).