Sarah wrote:
I can't write over or backspace a highlighted word in Word 2003
(professional).

In Tools Options Edit, check the box for "Typing replaces selection".

How can I spell/grammar check in Italian in Word 2003?

If your copy of Office is based on English, it has only English, French, and
Spanish spell checking. To add Italian or other languages, you need to buy a
copy of the Office Proofing Tools
(http://www.microsoft.com/PRODUCTS/in...cid=071b9ced-e
d82-47ef-b5fa-a42ecbdec9b7&type=ovr). Once that's installed, see
http://office.microsoft.com/en-us/as...080511033.aspx.

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Regards,
Jay Freedman
Microsoft Word MVP FAQ: http://word.mvps.org