Help to open a program upon log-in that is minimized

Hi Everyone, I have been pulling my hair out for the last 6 hours trying to get a key remapper program to boot in the background when the computer is turned on. I am putting the final touches on my custom HTPC, which includes an instant sheller that I have used before, and I have used Task Scheduler prior to this to open up anything and simply keep it minimized, but this program will not...