Searching with in the Microsoft Office 2007 documents becomes little difficult as default Windows search does not support file format that has file extension such as docx, .docm, .pptx, .pptm, .xlsx, .xlsm. The solution of this problem is to install Microsoft Filter Pack.

To enable yourself to search inside word documents, simply download and install 2007 Office System Converter: Microsoft Filter Pack.

These IFilters are used by Microsoft Search products to index the contents of specific document formats. 2007 Office System Converter:

Microsoft Filter Pack will install and register IFilters with the Microsoft Windows Indexing Service and that will enable searching inside office 2007/2010 format documents.

The installation of this utility could also ask you for its prerequisite Microsoft Core XML Services that can be downloaded from here.