If you want to change the date format across the whole blog, then go to settins in the backoffice, then choose regional and change the date format for your locale. If you just want to change the way the archives display in a single skin, then open up /skins/yourskinname/_archives.php

       # override general date format ? 0 = no: use the date format set in Options, 1 = yes: override
        if(!isset($archive_date_format_over_ride)) $archive_date_format_over_ride = 0;
        # options for daily archive (only if you override the general date format)
        if(!isset($archive_day_date_format)) $archive_day_date_format = 'Y/m/d';
        # options for weekly archive (only if you override the general date format)
        if(!isset($archive_week_start_date_format)) $archive_week_start_date_format = 'Y/m/d';
        if(!isset($archive_week_end_date_format)) $archive_week_end_date_format   = 'Y/m/d';

Change the 0 to a 1 to override the backoffice date format setting, then change the date formats.

This page will help you find the right things to put in to format the date:
http://us2.php.net/date

Sept 13/05 would be 'M d/y'

Just an FYI: the date settings are also findable on your settings tab regional subtab then click 'create new locale' link.

Never saw that before. That's handy, though. Thanks.

I followed the instructions through the Settings Tab. Too Easy!!

Thanks for the help

H