Hi,
For this you need to do following ..
In your select statement..
<select name="location[]" size="3" multiple>
<option>your options
</select>
In your PHP file...
$count=count($location);
for ($i=0;$i<$count;$i++)
{
$eachvalue = $location[$i];
}
by this method you can recieve the value of your multiple selected box..
Hope this would help..
Regards
Tabish