A problem in Microsoft Word

My version is Windows Office 2000.

A message box often pops out when writing a document:

Microsoft Word can't use the AutoCorrect lists. 
This feathure is not currently installed.
Would you like to install it now?

I click "No", but it comes out again later on.

I don't want to click "Yes" coz I have no installation disc at hand.

What can I do then?

Any suggestion will be highly appreciated!