If you're using Equation Editor 3 (the only one in Word 2003 or earlier, and
available through the Insert Object dialog in Word 2007), select the letters
and click Style > Text in the menu bar.

It would be possible to click Style > Define and uncheck the box for italic
on the Variables row, but that's not advisable if you want to keep real
variables in italics.

I'm not sure whether anything comparable is possible in the new Word 2007
equation feature. Even if you right-click selected text in an equation, go
to the Font dialog, and choose Regular, the equation ignores it and stays
italic. You can go to Office button > Word Options > Proofing > AutoCorrect
Options > Math AutoCorrect > Recognized Functions and add specific words
that won't be italicized (this is intended for function names such as log or
cos), but that's not good for general text. You might have to mix together
multiple equation objects with regular text to get the desired appearance.

--
Regards,
Jay Freedman
Microsoft Word MVP FAQ: http://word.mvps.org
Email cannot be acknowledged; please post all follow-ups to the newsgroup so
all may benefit.

Be more specific please -- what OS (Windows or Macintosh), and what
version of Word? It matters tremendously.

In the event you're using Word 2007, be even more specific -- which
method of entering equations are you using?

--
Bob Mathews
Director of Training
Design Science, Inc.
bobm at dessci.com
http://www.dessci.com/free.asp?free=news
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