Ruthi,
This process is quite simple.. If you have a list box as so:
<select name="list[]" id="Select1" size="4" multiple="multiple">
<option value="1">item 1</option>
<option value="2">item 2</option>
<option value="3">item 3</option>
<option value="4">item 4</option>
</select>
The name of the list box is list[] specified as an array. When you submit this form you can iterate through the list array and store the data into the database such as:
foreach($_REQUEST['list'] as $list) {
//Store $list items in the database.
}
Hope that helps?
Thanks
Russell