mod_rewrite for IIS
Apparently IIS7 is gonna have a url rewrite filter that will be compatible with Apache’s mod_rewrite. About time.
If you can’t wait or can’t upgrade then there are other options. I needed one for a site and found a nice free one called IIRF. It’s distributed under the Microsoft Permissive License.
If you don’t have any idea of what a url rewriter does – well it’s server side software that allows the browser to request http://foo/bar/bam and receive http://foo/something/dispatch.cgi?q=bam.
This is useful for easy to remember urls and also for search engine optimisation. Go google mod_rewrite for more details.