Add pdf content to Windows 7 search index

Since Adobe X does not install the iPDF-Filter anymore, i installed the free PDFlib TET PDF IFilter
http://www.pdflib.com/de/download/tet-pdf-ifilter/
on my Windows 7 64 bit machine to let the Windows search also index the content of PDF files and to find them using the Windows Desktop search.
After installation the index options look like this:

After rebuilding the index, also my pdfs appeared in the search results.