I recently upgraded my main machine to Windows 7[1,2] and I tried opening up Windows Live Writer to update my blog and found that it seemed to be in a constant hung state. I then right clicked on the shortcut for the program and chose the “Troubleshoot compatibility” option. It then gave me the following screen.
It now works. YAY!
 I am not telling what build.  I’m trying these square brackets. I saw that KC Lemson was doing it. I tend to use lots of Parentheses and I think that this might be better?