Anything that you put into AutoCorrect will apply to all of MS Office.
I would put changing everything to capitals in the same category
as blinking text, scrolling marquee's, gaudy colors -- it is certainly
not business like.
Certain columns might well be capitalized such as a US 2 letter
postal zip state code. For which you could capitalize them
all at once
http://www.mvps.org/dmcritchie/excel/proper.htm#proper
or with an event macro when entered which you will find under
the same topic.
Event Macros
http://www.mvps.org/dmcritchie/excel/event.htm
are not installed the same as normal macros
http://www.mvps.org/dmcritchie/excel/getstarted.htm