Set down the Creatix robot, run install, select OpenOS, and reboot it when the install completes. Make sure to put a Geolyzer in its upgrade slot (not its tool slot!).
Now that your robot is running and OpenOS is installed, just paste this into it. (If your Roboserver is running but you don't have internet access, you can use the local install instead.)
After answering a few questions about your robot, it will connect to the server you started in the previous step. Congratulations, you're done! Next check out these tips on how to use the Roboserver.