Use the Equation Editor. If it is installed (which it is not by default),
you can insert an equation using Insert | Object | Create New: Microsoft
Equation 3.0. If it is not installed, Go to Control Panel | Add/Remove
Programs, select Microsoft Office, and click the Change button. In the first
page, select "Add or Remove Features."
On the next page, expand "Office Tools." Select Equation Editor and set it
to "Run from My Computer." Click the Update button, and insert the Office CD
when prompted.

If you plan to use equations often, you may want to use Tools | Customize to
put an Equation Editor button on a toolbar.

--
Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
Word MVP FAQ site: http://word.mvps.org
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all may benefit.

"antonis" wrote in message
...
Hi,
I'm working with Word 2003 and I'd like to create a 5x5 mathematical
matrix.
My question is how I can do that? I've tried to exploit Math type 3.0 but
I
found no function for doing that. I welcome any help from the forum.
Thanks.
--
antonis