WSE 3.0(only required if submitting requests using username token authentication)
SSL certificate for your domain (strongly recommended)
Install WSI
Ensure that the WSE 3.0 addon from Microsoft is installed on your server.
Open your web.config file, and search for WSI. You should find 4 sections that are commented out, each marked with a WSI Web Service Interface label. All 4 sections need to be un-commented.
Verify that you can browse to http://www.yoursite.com/ipx.asmx and that the page loads without error. WSI is installed!