looking for place to get copies of car keys made

hi all -

we have a '93 volvo that we inherited from my husband's father and are trying to get copies of the keys made, as we only have one key (and that is tempting fate).

we've tried a bunch of hardware stores who have advised on going to a locksmith.

anyone know a locksmith/place in the park slope area that cuts car keys?

thanks a million in advance!