GUI for an Arduino

I need a GUI developed for a Windows machine that is essentially one page and can send and receive 8 parameters (floating point/integer) to and from an Arduino UNO board through the serial USB port and display them. The layout of the GUI is complete and there is no preference as to the language that may be used to implement the GUI as long as it looks relatively similar to what I provide you in the layout. It could be Tcl/Tk or C++ or other as long as it works on a Windows machine. There is also a requirement for a relatively straight forward graph to be implemented on the GUI based on the parameters inputted. There are no interface pins available on Arduino as these have all been allocated for other functionality. Requirements: 1) Must be able to loose connection and automatically reconnect (USB cable connect/disconnect) a. Stability of both Arduino and GUI on Windows is a must b. Parameters last set on the Arduino take priority c. “Real time” monitor of at least one parameter as minimum 2) Our Arduino C code will be provided and may be modified to include the communication functions as necessary with the GUI. I will sandbox some of the functionality for you. a. Communication functions on Arduino must not create excessive overhead 3) Main critical functions of our code cannot be placed in “wait” or interrupted for more than 500us. 4) RTOS or equivalent interrupt driven code may be necessary.