[kde-linux] customizing welcome screens

[Philipp Paul]

hi all.. 
recently, after some heavy usage of KMail and Konqueror, i realised, that the 
welcome screens seem to be in HTML-Format..
this made me think, that they are customizable.. 
can i do this?
and if yes.. where are the HTML/CSS files located and how to edit them... 
just to make clear i DO know HTML and i DO know CSS, but maybe there are some 
kind of makros used. well that would maybe make it necessary for me to edit 
them too. 

any help would help