Get a Virtual Assistant to represent Jarvis, try downloading Syn Virtual Assistant ( Google - "Download Syn Virtual Assistant" )
After you have installed the Application click Right Click > Run As Administrator
Click Settings Panel Icon > Graphics And Speech > Select Dave as Avatar.Make sure you have a male voice installed before selecting Dave. You have a Jarvis like system ready and now for the extra touchings.
Install the Rainmeter application (Google - "Download Rainmeter" ) This is to bring the Jarvis UI system onto your desktop
After you have installed your Rainmeter, get the final touch. That is the Jarvis skin for Rainmeter ( Google - "IronMan Jarvis Rainmeter Skin" ) Unload all skins and reload the IronMan Jarvis Skin
Give voice commands to your Jarvis like AI Assistant and test it's functionalities