AS the new governing board at Dalal Street's Jeejibhoy Towers gets ready to celebrate BSE's 125th anniversary next year, its mandate is clear: shape up or ship out. With market watchdog SEBI deciding to get the old guard out, BSE president J.C. Parekh has received his marching orders. Observes D. Vakharia, a BOLT (BSE Online Trading) trader: "Sacking Parekh was unfortunate, but the message is clear. For the first time, SEBI has thrown an open challenge to the old boys' network which has been running the premier stock exchanges like its personal fiefdom."