A very common requirement for today’s apps is having “friendly” or clean URLs. We can achieve that easily in XAMPP, following these steps:

First, enable Apache’s mod_rewrite module:

Edit httpd.conf file under [xampp-install-directory]/apache/conf. On Windows, that’s typically C:\xampp.

Uncomment:
#LoadModule rewrite_module modules/mod_rewrite.so

So it stays:
LoadModule rewrite_module modules/mod_rewrite.so

Lastly, search for AllowOverride None and replace with AllowOverride All.

In order for the changes to take effect, we need to restart the server.

Source: Murfitt.net http://murfitt.net/blog/dan/2007/10/04/xampp-and-modrewrite-getting-clean-urls-work