im searching for my logo.gif url in my tpl_header.php file because i want to change the directory to other logo file.. i didnt found the url here & in my stylesheet for logo.. id created code something like in my css file :

#logo {

width: XXXpx;
height: YYYpx;
background-image: url(other_logo.gif);

}

but the same zen logo still appear.. anybody know where to find or what to create? im using notepad++ to edit my .php file & its more complicated than html source file. anyway tht i can just edit the html code or i only can edit .php file..?