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Download and Configure an ISAPI Filter

1. Download  isapi package here. The archive is a pre-packaged isapi filter along with a recommended directory structure and pre-configured files. It is a starting point.
2. Expand the archive. For the sake of this document we will assume the archive is expanded under your "c:\" drive. If you do that, you should have a folder c:\isapi after expanding. 
3. The isapi archive contains version 1.2.28 of the isapi connector for win 32. If you need to upgrade and/or IIS is running on win64, download the ISAPI Redirect DLL from the Apache site. If you download a new isapi filter:  
   1. When downloading, choose the version of Windows that IIS is running on (either win32 or win64), and then choose the latest available jk version. 
   2. The file to download is named isapi_redirect_X.X.X.dll, where 'X.X.X' is the version number. You will need to remove the version number from the DLL file (i.e. it needs to be named isapi_redirect.dll). 
   3. After downloading and renaming, update the dll in c:\isapi\bin. 
4. Under c:\isapi\bin you will find isapi_redirect.properties (shown below). If you expanded the filter in c:\isapi you don't have to change anything. Otherwise, just edit the paths accordingly.

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