Help: Permalinks on a Windows Server IIS
You're going to need to search for IIS support for ".htaccess" and "mod_rewrite". The newer IIS versions have some supporting features built in and there are some 3rd party apps and utils as well. Here are some quick links to get you started. You'll want to forward these to your server IT staff and let them know you need support for .htaccess and mod_rewrite (or equivalent):
- http://www.helicontech.com/isapi_rewrite/ (we've had some customers use this in the past).
Hope that helps!
Sure you can see the list of flags here: https://httpd.apache.org/docs/current/rewrite/flags.html
NC means no case or case insensitive, and S mean skip. If you don't need the https or www redirection blocks you can just remove those and just leave the permalinks block. I don't think that uses any of the unsupported flags.