How to create a Windows installation USB in Ubuntu? [duplicate]

Following the guide from THIS link

Just download MultiBoot from here: http://liveusb.info/multisystem/install-depot-multisystem.sh.tar.bz2

Decompress it. Run the install-depot-multiboot.sh from the terminal and follow the instructions. You should see the program in Applications -> Accessories -> MultiSystem (And even a MultiSystem for Virtualbox)

Then just run the program and follow the steps in it. Already tested Windows XP, Ubuntu and Windows 7.

For more info read this post: How to create a bootable USB with multiple ISO images in it

There is a two-click possibility using WinUSB.

2017 UPDATE: WinUSB has been forked to WoeUSB, which supports Windows 10. See a guide here.

To install WinUSB, execute the following commands in terminal:

sudo add-apt-repository ppa:colingille/freshlight
sudo apt-get update
sudo apt-get install winusb

I have tested this in 12.04 and 12.10.