Adding Pdf search to WSS 3.0 ,Sharepoint 2007 or MOSS 2007

Adding Pdf search to WSS 3.0 ,Sharepoint 2007, MOSS 2007
Although it is easy to found around, I have compiled the following information anyway:

1. Download the ifilter plugin for adobe pdf documents.
2. Install the filter as in told here.
3. Download the pdf icon here.
4. Edit C:\Program Files\Common Files\Microsoft Shared\web server extensions\60\TEMPLATE\XML\DOCICON.XML -> add an entry for pdf
5. copy the pdf icon to C:\Program Files\Common Files\Microsoft Shared\web server extensions\60\TEMPLATE\IMAGES
   
6. iisreset