I use Corel x3 with my Craft Robo. I think the reason that you only see the plug-in for Illustrator is because (as I recall), the Corel plug-in is automatically installed (as opposed to having to install it separately).
If you're not seeing the option for Craft Robo in your Corel launcher button (the little rocket ship on the Corel tool bar), then try uninstalling the Craft Robo and re-installing it.