Since the new 2.3+ version of osCommerce have some major design related differences to the older versions, i have made this new updated basics for osCommerce design topic.
Changing the shop logo
In the store admin under Configuration >> Store Logo you can upland your own logo.
Changing boxes, right and left columns
In the store admin under Modules >> Boxes you can control which boxes to show and if they should be shown in the right or the left column.
If you place all the wanted boxes in just 1 column, only that column will show and the site content will automatically fill the rest of the width.
The main files for design changes are:
In some cases you might find a need to edit these 2 files.
2.3+ design is DIV/CSS based and also uses to "standardized" systems Grid960 and jQuery UI.
Grid960 is basically what controls the structure/layout of the webshop.
The files are located here: ext/960gs/
You can find more information about the 960 Grid System CSS Framework at www.960.gs
jQuery UI controls buttons, boxes, listings ++
The files are located here: ext/jquery/ui/
You can find information, download new themes or create your own themes at www.jqueryui.com
Edited by toyicebear, 03 December 2010 - 14:10.