I can't see that this question has not been asked yet, but after searching and searching I have not come up with anything.

Basically I want to use a AUX out on my cars alarm/remote start to boot up my PC, and then when the computer is on and it loads FCC I want my brain to sense that the line from the alarm is active and from there launch a batch file i have that will activate my wifi card. I know how to do all the wiring and how it will all work. My question is, is there a command line in the logic that you can launch an external program? I have all the logic to get to that point squared away, but don't know about a "run" command. Example: "run c:\wifi_on.bat" or something along those lines.