taxonomy dropdown/select box

hi all - sorry if this seems like a stupid question but I've searched high and low but can't find the answer! I have a "gift options" vocabulary set up with these terms:

Under $20
$21 - $50
$51 - $100
Over $100
Gifts For Him
Gifts For Her

I need to display this in a dropdown (select box) instead of all written out to the page. How do I do that? Do I need to tweak my theme or is it done thru Admin somewhere?

thanks!

Jason