Exporting G-Code

Hi all,

Just downloaded Xylinus and just trying to export some curves directly to a 3D-printable G-code, so I'm using the Crv to GC cluster, and it looks like the data is there but I'm not sure what the output should be? i.e. how can I save the g-code from my computer onto a flash drive and then plug that into the 3D printer? 

This might be a simple question, but it's the first time I've tried using the plugin. Trying to develop thickness and an .stl to my model has just presented a bunch of issues, so going directly from curve to g-code would be massively helpful.