Ok, so, how exactly would I do that. Do I need to open the game then run the .com file or do something else?

So, I have the Steam versions of Doom and a bunch of other games running on dosbox in the id Super Pack, and I found this nifty little thing here http://www.doomworld.com/idgames/index.php?id=12039 Problem is, I can't seem to get it to work. I put the .com file in the base folder and added -novert …