goto start -> all programmes -> microsoft sharepoint programmes -> rightclick on sharepoint managment shell -> then click on run as admin.

wait for it to load, the error indicates that the moduels havent been imported. the best way to do this is by navigating again to the same place this time when you right click on sharepoint managment shell you can select pin to start menu. now it will be under start menu at the top when you click on the start button. you should see a arrow pointing to the right, click on the arror or hover over, move to the right and click on import system moudles!

goto start -> all programmes -> microsoft sharepoint programmes -> rightclick on sharepoint managment shell -> then click on run as admin.

wait for it to load, the error indicates that the moduels havent been imported. the best way to do this is by navigating again to the same place this time when you right click on sharepoint managment shell you can select pin to start menu. now it will be under start menu at the top when you click on the start button. you should see a arrow pointing to the right, click on the arror or hover over, move to the right and click on import system moudles!

I would also like to note that your mixing two commands into one!

New-SPWOPIBinding -ServerName <String> [-Action <String>] [-AllowHTTP <SwitchParameter>] [-Application <String>] [-AssignmentCollection <SPAssignmentCollection>] [-Confirm [<SwitchParameter>]] [-Extension <String>] [-FileName <String>] [-ProgId <String>] [-WhatIf [<SwitchParameter>]]

http://technet.microsoft.com/en-us/library/jj219441.aspx

Set-SPWOPIZone [[-Zone] <String>] [-AssignmentCollection <SPAssignmentCollection>] [-Confirm [<SwitchParameter>]] [-WhatIf [<SwitchParameter>]]

http://technet.microsoft.com/en-us/library/jj219451.aspx