Every test suite of any significance will require you to have some form of coded steps. As awesome as Test Studio is, there are always going to be things you’ll have to do via code. Test oracles to check your database or file system would be one example. Backing APIs for setup and teardown actions would be another.
Sometimes it’s just handy to have a breakpoint where you can pull up Visual Studio’s Immediate window and do live queries of the web page’s Document Object Model (web apps) or Visual Tree/XAML Tree (Silverlight or WPF applications).
I’ve just uploaded a short (2:49) video walking you through how to handle debugging coded steps from Test Studio Express inside Visual Studio 2010 or 2012.
I hope you find this useful!