SELECT DISTINCT 'QUERY1' AS SOURCE, A.txtName, Null AS Col3
      FROM ApprovalGroup As AG 
INNER JOIN UserGroups 	 AS UG 
	ON AG.txtInternetNum = UG.txtInternetNum 
       AND AG.intViewGroup = UG.lngGroupNum 
INNER JOIN Account AS A ON UG.txtAccountNum = A.txtAccountNum 
       AND UG.txtInternetNum = A.txtInternetCompNum 
     WHERE (AG.txtUserID = 'tester1') 
       AND (AG.txtInternetNum = '9570') 
UNION ALL
    SELECT DISTINCT 'QUERY2', a.txtName, t.blnsent 
      FROM transactions t 
INNER JOIN account a 
	ON t.txtAccountNum = a.txtaccountnum
     WHERE a.txtinternetcompnum = '9570' 
       AND t.dtecycledate = (  SELECT MAX(t1.dtecycledate) 
				 FROM transactions t1 
				WHERE t1.txtinternetnum = '9570')
       AND t.blnsent = 0
  ORDER BY a.txtName

-- OR 1 Row per
SELECT * FROM (
    SELECT DISTINCT 'QUERY1' AS SOURCE, A.txtName, Null AS Col3
      FROM ApprovalGroup As AG 
INNER JOIN UserGroups 	 AS UG 
	ON AG.txtInternetNum = UG.txtInternetNum 
       AND AG.intViewGroup = UG.lngGroupNum 
INNER JOIN Account AS A ON UG.txtAccountNum = A.txtAccountNum 
       AND UG.txtInternetNum = A.txtInternetCompNum 
     WHERE (AG.txtUserID = 'tester1') 
       AND (AG.txtInternetNum = '9570')
	) AS A
INNER JOIN
	(
    SELECT DISTINCT 'QUERY2', a.txtName, t.blnsent 
      FROM transactions t 
INNER JOIN account a 
	ON t.txtAccountNum = a.txtaccountnum
     WHERE a.txtinternetcompnum = '9570' 
       AND t.dtecycledate = (  SELECT MAX(t1.dtecycledate) 
				 FROM transactions t1 
				WHERE t1.txtinternetnum = '9570')
       AND t.blnsent = 0
) AS B
ON A.txtName = B.txtNAme
  ORDER BY a.txtName

-- Take your pick