From Forum Nokia Wiki

Mobile Web Server (MWS) consists of a Web server powered by Apache technology and a connectivity solution providing a mobile device with a global URL and HTTP access to it.

MWS project is initiated by Nokia. It is available on the S60 platform.

These are some snapshots of the MWS on the phone and the page served by it:

E61 Client	On the PC browser

If there is a need to customize the page, then it should be done in the web servers root folder. It is either on the Phone memory or the Memory card wherever the user installed it. The path to the folder is

X:\DATA\Web server\htdocs

here the template files along with their respective images are available in their respective folders. Customize the way you want the site to look like. Do create a backup if changing existing files.