I am looking to find a way to start and shut down a executable file.

I know how to start an exe file
But what I am looking to try and do is this.

Once the Exe is loaded upon a recycle or startup I want mzscript to check if it is loaded
If it is do nothing
If it is not, then load it
also
How do I get the exe to shut down when a theme is switched or litestep is killed.

If you know exactly which exe you want to control, AND if this one has no dynamic ClassName;TitleName AND if there couldn't be several instance of it, you could use One.dll or WndMan.dll to properly kill it.
You can use One.dll to launch your exe if this one is not already open.

Thanks smurth, I'll look into those mods...