Hey Mr Denco,
You'll need Serato DJ Lite 1.3.2 at minimum, as that is the version that introduced support for the DJ2Go2 Touch:
serato.com
If you can, I'd recommend grabbing the newest version of Serato DJ Lite, as it has the latest features and bug fixes:
serato.com
If you're using an older computer, you may want to check the latest version of Serato DJ Lite that you can use however, which is displayed in the operating system compatibility chart further below:
support.serato.com