Again, valid suggestions! I'd never thought of those!
As for the autocheck, I considered it, but I guess I never got around to it. Now that someone suggested it, I'll make sure to put it in (and it should be pretty easy.)
As for the time, I think I'll just edit the readme, rather than change it to seconds, milliseconds, etc. Really, I can't imagine wanting to launch programs 50 milliseconds apart rather than at the same time....And I believe (though I'm not sure, and too lazy ATM to find out) that you can enter decimals, like .5, and it will launch in half a minute. But I do see your point, I'll add something to the readme and GUI about it being seconds.
Thanks so much for the suggestions!