How to get ahead in your chosen field is a matter of talent, tact and tenacity.Jack Renfrew-newly minted architectural apprentice-hopes are high. >Mr Renfrew might be the man to make Bill and Enid Brown's dreams come true. It's just a matter of juggling a builder, a planning officer, his superior's superior ego and Mr Brown's daughter. From base boards to webbing trusses, it's a close run things which gets pulled out the most, Bill's cheque book or Jack's hair.