Quote by: Dirk
Depends on what you want to do, really. The header-bg.png is a background image and it's meant to be repeated. If that's what you want, simply replace the image.
Otherwise, you'll have to edit the header.thtml. Geeklog template files are pretty much plain HTML with some placeholders thrown in. If you know HTML and CSS, it should be straightforward.
For more information, see the theme documentation.
I have not much knowlage about CSS ot html, but I did change some themplates before www.eynek.biz
(mambo, and before that I use Joomla), beetwen them code difference. so some more detailes I need. I mean top of the page (blue bar, logo on it) put a header image, instead of blue bar. shuch as my current home page (www.eynek.biz). Code difference confusing me. I change direction for main page geeklog from language file put a line $LANG_DIRECTION = 'rtl'; but, same job applying to Forum, shown error message. so right now Forum list and articles text area still align left, this problem you can see http://www.eynek.biz/sinaq/public_html/forum/index.php
So, I withought more details, not able to try to change theme easily.