newbie - last_insert_id() with mysql

Hi- I am trying to insert information into mysql based with the sql queries below. When I run this insert from the mysql console everything works correct, however, when I run this through php the second sql query doesn't execute (I'm assuming there is a problem with the last_insert_id()). I have tried changing the "last_insert_id()" to a "mysql_insert_id()" function with no success? How do I get this to work? Thanks in advance, Max $sql1 = "insert into transport (domain,transport) values ('$domain','$transport')"; $sql2 = "insert into acl (adminId,transportId,securityId) values ('$userid',last_insert_id(),'1'"; mysql_query($sql1); mysql_query($sql2);