[eluser]pickledegg2[/eluser]
I notice a lot of you have had some success with IIS5.1 and CI, I've struggled too, I'll try some of the things discussed. Perhaps its the wrong place but I've had a similar problem with IIS5.1, isapi rewrite and the path_info problem when trying to rewrite for a wordpress installation. Everything is fine under IIS6.0 so perhaps the CI solution may also work for WP.