>SQL 2000 is the version and yes the ChargeType can only be 1 or 2, the RptCode can only OR or PACU
>
Try

SELECT meetingnumber, 
	SUM( CASE WHEN ChargeType1 = '1' AND RptCode = 'PACU' THEN y_Sent_To_Charge ELSE 0 END) AS PACU_ChargeType1,
	SUM( CASE WHEN ChargeType1 = '2' AND RptCode = 'PACU' THEN y_Sent_To_Charge ELSE 0 END) AS PACU_ChargeType2,
	SUM( CASE WHEN ChargeType1 = '1' AND RptCode = 'OR' THEN y_Sent_To_Charge ELSE 0 END) AS OR_ChargeType1,
	SUM( CASE WHEN ChargeType1 = '2' AND RptCode = 'OR' THEN y_Sent_To_Charge ELSE 0 END) AS OR_ChargeType2
  FROM ( < your query > ) dt1
  GROUP BY meetingnumber 

Or you can combine it with the original query.