What you need is a program called Zandronum.
It will allow you to use and run any* doom mod ever made, online. Just set it to the brutal19.pk3 and it will work like a champ. You can link that file after clicking on the "create server" button, regardless with Zandronum you can still find any other doom servers running with a TON of mods in there own right. And they should download automaticly upon connecting to any said server.
Hope this helped, enjoy.
FYI i played 5 maps today with brutal doom with the TNT evolution mod.
