code: public Rec setNodeIndex(int iNodeIndex, Rec record)
      {
          if (END_OF_NODES == iNodeIndex)
              iNodeIndex = 0;
          m_iNodeIndex = iNodeIndex;
          return record;
      }
docs: Position to this node in the tree.
  @param iNodeIndex The node to position to.
  @param record The record I am moving data to. If this is null, don't position/setup the data.
  @return An error code.