I recently got a copy of D!Zone Collectors Edition from a thrift store, but I have no idea how to use it. I own The Ultimate Doom I bought on Steam. I know how to get the WAD file and use it on different versions of Doom. I have old computers capable of running D!Zone and Doom natively. I have installed D!Zone on one of my old computers, but I have no idea how to use it. I can't find any tutorials online. How do I use it?