Bis.dll by T_D
All exe tools by T_D rely on bis.dll which is packaged separately. You must download this dll, once, for any of the tools to work. Also keep it up to date from T_D tools files page.
Put the .exe files in any directory you wish.
Put Bis.dll in the same dir as exe files, or, in the windows\system32 directory (your own tools dir is recommended).