Outlook add-in and WPF window

I am writing a simple Outlook addin using addin Express. This is for 2007 and 2010 . I have a wpf window I want to launch modally when a ribbon button is pressed in OL .

The code I have right now just does this

MainWindow mw = new MainWindow();
mw.ShowDialog();    

and everything seems to work fine. I guess my question is , is it really this easy or is something going to get me in the rear later. Is ther开发者_如何学运维e no need for any interop of any sort here?

Thanks