need help centering my logo

[Bombat]

i'm having difficulties to centered my logo.

i'm using smf RC3 and using this theme :http://custom.simplemachines.org/themes/index.php?lemma=749

and this is my site : http://www.thesims-indonesia.com/index.php?action=forum [nofollow]

please help 

[mashby]

File to edit is this one:
http://www.thesims-indonesia.com/Themes/ds-natural_20rc3/css/index.css?rc3
Section to edit...find this:

Koodi [Valitse] Laajenna

#logo a {
position: absolute;
left: 0;
  display: block;
width: 800px;
height: 600px;
background: url(../images/custom/logo.png) no-repeat;
}
I'm not entirely sure if it's truly centered or not, but changing left: 0; to left: 255px; will give it the appearance of being in the center. You could also ask in the support topic for that theme.

[Bombat]

now its centered    thank youuuu so much !

[antechindia]

#logo {
   position: absolute;
     display: block;
   width: ;
   height: ;
   background: url(../images/custom/logo.png) no-repeat;
}


create a new div name logo then give proper height and width and call it in html.