Windows – How to burn iso image with Windows 8 Consumer Preview to USB memory stick on Mac OS X

iso-imagemacwindows

I want to install the Windows 8 Consumer Preview on my netbook Samsung NB30. The netbook doesn't have a CD or DVD drive, so I want to burn the image to a USB memory stick. I only have Mac OS X machines at home currently, so I've tried to use the Disk Utility and the restore function, but it fails with a 'cannot validate source' error message.

Any idea how to put the ISO on USB stick using Mac?