In VS2010 I had a shortcut set up Alt+Up/Down to move lines of code up or down, just like I used to have in Eclipse in my Java days.
Now since Powe
You can use Move Line Command extension.
Just follow formula349's comment:
I was able to get this working with 2012 as-is.
Rename the package to .zip and unzip all files into a folder. Edit the extension.vsixmanifest file and look for the SupportedProducts XML node. Change the Version="10.0" to Version="11.0".
Re-zip the folder contents and rename back to .vsix. Works great!