If you download and install Blend 5 and Visual Studio 11 you will find these tools totally awesome. However, make sure to not load them on Windows 7, Vista or XP, they don’t work on those operating systems.
To get the operating system that these products will run on, you will need to go to this website first:
Then download the Visual Studio 11 and Blend for Visual Studio 11, they are in the same download package
Give it a try and see what you think.