how to create an application to receive the scpi ,like instrument firmware

hi , 

i need to write a windows application , this application would like a instrument firmware, when this application opened , the ni-visa could find a visa resource,like TCPIP::127.0.0.1::INSTR , if we use some tool to send SCPI command to this resource, this windows application can receive the command and do some work.

is there any document or sample code for reference?