When the blue button with the question mark is clicked, Office 2007 Apps open the Help window. In its upper left corner there is a field where you normaly can input search terms to search the Office help system locally and online.
On one single workstation in our institution this search field is constantly grayed out, in every application of Office 2007 Professional (Word, Access, Excel....) We have deinstalled and reinstalled Office several times, including cleaning of the registry with Ccleaner ´before reinstallation. But the problem is returning every time again on this computer. Installation of Office 2007 on another computer (it is an academic site licence) from this same DVD did not elicit this problem.