Our new production control program's going live on Monday . The old and the new programs will operate in tandem for four to six weeks . That should give us time to iron out any little problems .   Hope it all goes well . We're very busy at the moment and certainly don't want any problems at this time of year .   Yes , I realise that . We've spent a long time planning and preparing for the change-over . I'm confident we won't have any major problems . 