How to use Hot Imaging in GS3.1

Hi,

Does anyone have a step-by-step guide or video in how to capture an image of a live windows 7 workstation? I just upgraded to GSS3.1 and I see the option on the Console under samples, hot imaging, Create X64 or x86 image but where do I go from there? Also, can this be accomplished from a command line?

Thanks in advance :-)