How to know whether the components in Office Tab disabled?

Office Tab contains three components: Word Tab, Excel Tab and PowerPoint Tab
For Microsoft Office2003: Click Help >> About Wordtab >> Disable Item >> the disabled Wordtab >> “Enable” button
For Microsoft Office2007: Click Office menu >> Wordtab option >> add-in >> Manager >> the disable item from the dropdown >> the disabled Wordtab >> “Enable” button