[Elecraft] K3 Mini Questions/Problem interfacing with Client Computer

[Edward via Elecraft]

 Hoping you can help.  
Issue is as follows:
-Using www.remotehams.com
-Set up requires that I identify serial com port.  When I use the drop down for this, no port appears.  Nothing there.  Went to Device manager in computer and there are no ports listed there either.
Computer is Lenovo Yogi 13, using Windows 8.1  Am dead in the water and not as computer literate as I would like to be.  Help!
73,Ed NI6S