Go here and download the appropriate installer. Open the executable and follow the instructions.
In the Host box, enter an address (like 10.50.66.2); in the Username box, enter a name (like lvuser); in the password box, enter a key (like singularity); and then press Quickconnect.
Your local files will be listed on the left, and the server's files (i.e. the ones on the robot) will be on the right. You can click and drag files or folders. Alternatively, you can right click and choose either Upload or Download.