If you are using Microsoft Office 2007 and Windows Desktop Search 3.1, then you should install a small update to the search program. The “2007 Office System Converter: Microsoft Filter Pack” will allow Windows Desktop Search to index the new file formats in Office 2007 – .DOCX, .XLSX, .PPTX and the rest.
You’re using Office 2007 if the programs have the new ribbon toolbar across the top.
Windows Vista includes Windows Desktop Search 3.1 – you should install the update.
Download the filter pack from this page. Most of you will download and install “FilterPack86.exe”.
There’s a tantalizing reference on the Microsoft page about the filter pack. There’s a list of programs that work with the filter pack, including “Windows Desktop Search 3.1, Windows Search 4.” A year ago there was some speculation about Windows Search 4 – even a screenshot – but nothing since then, until this passing reference. Hmmm . . .