Using Kerberos between two separate domains

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http://serverfault.com – We run SharePoint 2007 in our environment and currently have a non-transitive, external trust setup between the two domains because we're planning on migrating to SharePoint 2010. Our SQL Server is in the domain 2, while domain 1 has the front end web servers. We have setup a SharePoint 2010 instance but are using NTLM, I'd like to change that to use Kerberos but having a hard time finding specific information on setting it up between the two separate forest domains. Don't get me wrong there's a lot out there, it's just informational overload and was hoping someone might be able share any ex (HowTos)