I'm looking all over the internet and I can't find any information on whether or not you can use Windows Authentication to connect to SQLServer.

For instance, in nHibernate you can have a connection string like this:

<add key="hibernate.connection.connection_string"
value="Server=myserver;initial catalog=mydatabase;Integrated Security=SSPI"/>

Can I do something similar to this in my hibernate.cfg.xml for Hibernate?

I'm guessing it can't be done with the Microsoft JDBC driver.

I have been able to do this using jTDS JDBC driver (which I think is much better than MS version). Make sure you read the docs as you will need to install a native dll to make it work correctly.