Here's the link to the software.
http://www.sc-x2.com/index.php?option=com_frontpage&Itemid=1
It is purely for driving the plotter/cutter.
I use Illustrator, and it has a plug in to allow auto export straight to Signcut, or Signcut will open up an AI file.
I love it. At first I got a bit confused that it was meant to design etc, but once I realised that it is for only driving the cutter, intelligently, I soon got to use it to its full potential. Select the colour you want to cut, add rego marks, or multiple copies.
Has specail feature for small objects.
Can add weeding lines, advances the vinyl so you can cut it off, then retracts to start the next job.
Great software, much better than other "plug ins" etc, in my opinion, and the tech support is fantastic.
Give it a try, you won't be disspointed.