Recently, when ever I opened any Office 2003 application (Outlook, Word, Excel, etc.) I got the following message “Microsoft Office Outlook can’t load Speech Recognition files. This feature is not currently installed. Would you like to install it now? [Yes] [No]”. Of course, I repeatedly clicked “No”. I didn’t want or need speech recognition.

After a quick Google I found that I had to remove the speech recognition from the computers regional settings.
First and foremost, close all Office applications currently running.
Once all Office applications have been shut down, go to Control Panel -> Regional and Language Options -> Languages tab.
Click “Details” in the “Text services and input languages” group box.

Select “Speech recognition” in the list box within the “Installed services” group box then click “Remove”.

Verify that “Speech recognition” has been removed from the list box.

Click “OK” to close “Text Services and Input Languages” dialog window.
Click “OK” to close the “Regional and Language Options” dialog window.
Open any Office application. Office should no longer prompt you to install Speech Recognition files.