The links /calendar, /camera, /webcam, /contacts, /logs, /messages, /inbox, /im, and /favourites have been implemented using native Apache modules. Hence you will not find anything related to them in the file-system. The actual mapping between the link and the functionality is done in httpd.conf, in sections like
That section specifies that the handler for the link /im is the handler known as im. Don't let the fact that the names are identical confuse you. They could be completely different.
In httpd.conf, you'll find the line
That line specifies that the link /s60v2-images is an alias for the directory C:/Nokia/Images. That's were the pictures are stored.
Alias /s60v2-images "C:/Nokia/Images"
If you now look further up in httpd.conf, you'll find
Simply stash a # in front of Require valid-user, or delete the line completely, and anybody can access your images.
# Change 'valid-user' to a specific user or comment the line out if
# want to allow access to anybody.
The images page is created using default Apache functionality for presenting the contents of a file-system directory. You can find more information here: http://httpd.apache.org/docs/2.0/mod/mod_autoindex.html