Uninstall Office 2003, Office 2007 or Office 2010 suites

Source
Uninstall Office 2003, Office 2007 or Office 2010 suites if you cannot uninstall it from Control Panel

Office 2003 suites

To uninstall the 2003 Microsoft Office suite automatically. Click Run in the File Download dialog box, and then follow the steps in the Fix it wizard.

Fix this problem
Microsoft Fix it 50416

Office 2007 suites

To uninstall the 2007 Microsoft Office suite automatically. Click Run in the File Download dialog box, and then follow the steps in the Fix it wizard.

Fix this problem
Microsoft Fix it 50154

Office 2010 suites

To uninstall the 2010 Microsoft Office suite automatically. Click Run in the File Download dialog box, and then follow the steps in the Fix it wizard.

Fix this problem
Microsoft Fix it 50450