MHOTKEY.EXE
(???)
This utility seems to get installed with the software that comes with the type of keyboards called "Internet keyboards", and in most cases is associated with an icon in the System Tray. It would seem that its purpose is to enable the end-user to program certain key combinations or function keys to do specific tasks, or access specific sites, while browsing the Internet. We do not know much more than that, except that in many instances a bug in the software prevents the use of the keyboard in DOS session windows !!
Recommendation :
Either uninstall the keyboard software which installed this program (via the "Add/Remove Programs" icon in the Control Panel), or disable it with Startup Manager. It is better to use the Netscape Bookmarks or Toolbar Buttons feature, or Internet Explorers Favorites, than expose yourself to a program which seems quite buggy.