Your Midi Keyboard is very nice. As per novation first read below:

Minimum System Requirements
Impulse and Automap are designed to work with Mac OS X and Windows. At the time of writing the
supported operating systems are:
MAC - OS X 10.7 Lion and 10.6 Snow Leopard (32 and 64 bit)
WINDOWS - Windows 7 (64 & 32 bit), Windows Vista (32 bit only), or Windows XP SP3 (32bit only)
USB class compliant (no driver necessary for basic use). Automap installation includes a driver for

Installation and Setup
Insert the Impulse Installer DVD-ROM into your
computer’s DVD drive
If you wish to use the included Ableton Live Lite
software then run the installer and follow the
on-screen instructions
Run the Automap installer and follow the
on-screen instructions
After installation the Automap
Software Setup page will
be shown:
Step 1 Select your music
software from the list on the left
hand side
Step 2 Select the Impulse from
the drop-down menu on the right
hand side
Step 3 Press the Setup button
to begin the setup process
Follow the steps in the on-screen setup guide that is specific to your music software.
At the end of the setup process the Impulse and Automap will be configured to work with your
music software.

You can download user guide or getting started guide from the link
http://us.novationmusic.com/support/product-downloads?product=Impulse#User%20Guides

You can also refer PDF tutorial for Magix
http://www.magix.info/us/how-to-connect-record-from-keyboard-revised.online-training.1065831.html

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