If all you care about is re-mapping Modifier keys, you can do that without Microsoft's software by just going to System Preferences > Keyboard > Modifier Keys... For the eject button, you can use F12, or you can also add an eject button to your menubar (see http://www.methodshop.com/gadgets/tutorials/osx-menuextras/index.shtml). Then you can avoid the keyboard software altogether (which seems to cause many other problems). Not sure if that's what you're looking for.