How to start another instance of exe program

Hello,

I developed an nice tool to manage VNC clients host and launch a VNC viewer to access a remote computer. I have many clients that I setup VNC host on their computers. I carry the VNC application I created, VNC table in CSV file, and the VNC viewer from RealVNC on my memory stick.  Now, I do not have to look up connection info and can run from any Windows computer that is on the Internet.

As part of the its program feature growth, I need to be able to launch multiple instances of VNC viewer from my app. There is no problem doing this outside of my program. How do I start another instance of VNC viewer for access to another computer with the VNC host?

Thanks