Instructions
Unzip to a directory and run MWTEdit.exe
See the rest of the wiki pages for details on what each option does
Go into the Tools Options menu set the File Location to where you want to store the teases. The Nyx Only check box will mark any TeaseMe / GuideMe only fields in red (Nyx has less functionality so those fields get ignored by the Nyx generator)
Go into the File New menu and input the name of your tease. This should create a new xml file and directory to store pictures etc. The xml should contain a basic one page tease
Copy the pictures you want to use into the media directory and select the Tools Refresh Media menu option to load thumbnails into the editor
You should now be able to edit the new tease in the editor
If you do not create a tease xml the editor will still work but there is no where to save the changes