Read the DoomTrek scenario file
        type .\startrek\doomtrek.txt |more
Patch the ceiling textures (This will alter your main Doom.wad)
        .\startrek\new.bat
Restore Original Textures in Doom.wad
        .\startrek\old.bat
play Doom with the Star Trek levels and wall textures
        doom -file .\startrek\doomtrk1.wad
play netDoom with the Star Trek levels and textures
        ipxsetup -file .\startrek\doomtrk1.wad
