I don't know of any existing VIs that emulate a vt100 terminal. Here is another discussion where they talk about what you would have to do to build it yourself.
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RNAME=ViewQuestion&HOID=50650000000800000099300000&ECategory=Measurement+Studio.LabWindows%2FCVI
Unless somebody else has already done this, you'll have to build them yourself.
