All characters/creatures in the game are .cre files. If they talk, they all have .dlg (dialogue) files. If you have WeiDU in your game directory (which you do, if you got the command options) then just open a command prompt to your game folder (which apparently you've also figured out) and just type: weidu scsarles.dlg. You'll end up with a scsarles.d file, which is the uncompiled dialogue and is much more human-readable. You should be able to follow the rest of the tutorial in the WeiDU document and other tutorials. As for making your own dialogue file (which you want to be a .d file, uncompiled so you can write it), use any plain text editor, such as Notepad or my favourites EditPad and PSPad.