Good day @Orlandoc6,
It is strongly recommended to run Ubuntu when working with ROS, specially when getting started. Environmental variables can give a lot of headaches. I would give this a look (careful as it's installing a different ROS version in the example, once you get to Install ROS you should follow the installation guide for the indigo distribution) or contemplate running a virtual machine with Ubuntu 14.04 for this. Make sure to install 14.04 if you follow the link.
As I don't know what errors you are getting (console output is much appreciated) my first guess would be a missing step on setting your environment up/some missing dependency. I can redirect you to our docs for the process you need to follow to set up an Ubuntu 14.04 machine.
Lastly, those environmental variables (ROS_MASTER_URI and ROS_IP) are (respectively) used to identify the master and current node's addresses, as ROS is a server-client process. In this case the server is the ErleBrain as that's where everything is being executed and the computer is a client. The IP's you see there are the default ones you'd have when using the hotspot wifi the brain generates.