BrMainDb *mainDb = BrMainDb::Instance();
  mainDb->SetUserName("query");
  mainDb->SetHostName("rcas0005.rcf.bnl.gov");
  mainDb->SetDbName("BrahmsMain");

  mainDb->Connect();
  mainDb->ConnectToCalib();
  mainDb->ConnectToRun();

// here, DO NOT initialize anything. This is done in the BrDbUpdateModule

  BrCalibrationManager * calibManager = BrCalibrationManager::Instance();
  BrRunInfoManager* runMan = BrRunInfoManager::Instance();

  runMan->Register(runno);

  BrDbUpdateModule * dbMod = new BrDbUpdateModule("DB","DB Update");

// here, the BB calibration objects will be internally registered
  BrBbCalHitsModule * bbHits = 
    new BrBbCalHitsModule("BB","BB Calibrated hit Module");
  bbHits->SetTreeOn(kFALSE);
  bbHits->SetUseOldCal(kFALSE);
  bbHits->SetMaxTdc(3800);
  bbHits->SetMinTdc(10);

// here, no DB reference at all
  BrBbVertexModule * bbVtx = 
    new BrBbVertexModule("BB","BB Rdo Module");
  bbVtx->SetTreeOn(kFALSE);
  bbVtx->SetMaxTimeDiff(0.5);
  bbVtx->SetZOffBig(19.64);
  bbVtx->SetZOffSmall(18.1);
  bbVtx->SetZOffFastest(0);
 
// you can see here that nothing has been initialized yet.
// now comes the time to do it
   
   dbMod->Init(); // initialize runinfo and calib managers
   bbHits->Init();
   bbVtx->Init();

// now you have to begin explicitely since you don't use any module
// container or main module

   dbMod->Begin(); // begin (extremely important) runinfo and calib managers
   bbHits->Begin();
   bbVtx->Begin();

// note that you should be careful since your Begin should be
// in a loop over sequences of files



// event loop Ok.

  BrEventNode * bbHitNode = new BrEventNode("bbHit","bbHit");

  dbMod->Event(nextevent, nextevent);
  bbHits->Event(nextevent, bbHitNode);
  bbVtx->Event(bbHitNode,bbHitNode);
  delete bbHitNode;