Thank you Ciberthug, but that's not what i was looking for;
I figured out how to do that in asp, but if the users decides to add an element to existing options I enumerate in asp ?

This is in a form to add a new record to our db.
It's working well, but since there are no combobox in HTML, i choose to use textboxes in conjunction with listbox (synchronized). needless to say, my boss didn't like it as much as I did lol.

So he asked me to redesign the form w/o textboxes and just buttons instead where the user should click and then an inputbox would ask them what they would like to add...

I just need the part where in vb i would have done this :

cboItems.additem "MyNewItem"
cboItems.Text = "MyNewItem"

Thanks !