Thank you for trying to help, CyberTaz, but...
>you always can use the standard keystroke Command+W to
close Help... Just make sure it's the active window.
I can't find a way to make Word Help be "the active window" for Command-W, or for options in the Window-menu (like "Minimize Window") because if a word-document is open, it (instead of Word Help) is always the active window. Word Help won't be "active" even if I type something in "search help" or highlight things in search help or in the right-side frame. If no other document is open, then command-W will close the window for Word Help, although command-M won't minimize it.
>that doesn't 'fix' the problem if the 'traffic light' buttons or the title bar are actually missing. There should be 3 tiny circular buttons
You're right in saying "that doesn't fix the problem if..." because the usual buttons (red x, yellow -, green +) are missing on the window for Word Help.
I tried the other things (Repair Disk Permissions, Verify Disk, Restart) but this didn't change anything in Word 2004. Evidently, quitting the program (or closing all documents, which is equally disruptive for my work flow) is the only way to make Word Help disappear, and I can never use Word Help again (since the 11.5.5 update) without having Window Help be inert, with no way to close it or move it elsewhere on the screen.
Craig