PHP Crypt on MacOSX

I recently moved a site to a MacOSX based Apache/PHP server. Apparently crypt only uses DES. I read somewhere that "there is no way to get it use use MD5", which sounds hard to beleive considering the OS is BSD based. So.. here is my dilema.. My db contains usernames and passwords. The passwords are MD5 $1ljdslkjdsf$lkjdsaflkjdsf (created by crypt().) So on this new box, new accounts created get DES passwords. I just as well prefer to not see any DES encryptions used in this db. Any Mac OSX'ers in here that may have a solution? All my users recreating new passwords for their account is not an option. Thanks for any ideas, Kris