If you want to have a timestamp in the shoutbox which is different to the rest of the forum i.e. just the time and not the date then open your vbshout.php and delete the following:
Code:
$Time = vbdate($vbulletin->options['dateformat'], $time, $vbulletin->options['yestoday']);
$Time .= ' ';
Hope someone might find it useful. You'll find an example how it looks after modification in the attachement. It also works in vbadvanced if you have it installed in there.
Hassi