klezmer,

1. In Windows, search for and open Control Panel.
2. In Control Panel, click Ease of Access. Ease of Access.
3. In the Ease of Access Center, click Make the keyboard easier to use.  Ease of Access Center.
4. Uncheck the option for Turn on Mouse Keys, and then click OK.  Make the keyboard easier to use.

That works!  Interesting--it is the opposite advice from what Microsoft advised in their support forum.  For anybody else reading this, with mouse keys OFF, and with the NumLock on:

Home and End on the numeric keypad do the right thing.  Sames as fn-home and fn-end on the keys below shift.

Arrow keys work correctly in both places

Control-Home and Control-End in the numeric keypad go to top and bottom of the document

Control-PgUP and Control-PgDn both search for the word 'office' no matter what was selected before or what document you are in.  Thank you MS for building in the one functionality I desperately needed...  That was in a Word document; doing it in Firefox switches to the next tab.

Control-left and right arrows in either keypad move the cursor by one word.  Rather like old Emacs.

Thanks again.

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Control Alt-Right Delete