I know, lame question, but even if it's so basic, I couldn't find the solution here in the boards...
How can I set the default sorting in listers? I have set the sorting in Folder/Folder Formats, but it had no effect...
Take a look at Nudel's HOW TO: Understand and Configure Folder Formats FAQ. Once you're familiar with using Folder Formats, you'll want to look at either the 'Display' tabs 'sorting' option or the 'Columns' tabs 'sort' column... but the important part of making it work is paying attention to how describes using folder formats properly in general...