Creating A Sub Total Using Group By

I have a table that I want to summarize the amount column and have it show the sub totals for the employee for each pay period. For example:

EMPLOYEE PerEndDate EarnCode Amt
A 8/1/2007 Hourly 100
A 8/1/2007 Peices 250
B 8/1/2007 Hourly 75
B 8/1/2007 Pieces 300
A 9/1/2007 Hourly 50
A 9/1/2007 Pieces 200
B 9/1/2007 Hourly 100
B 9/1/2007 Pieces 200

What I want to show is

Employee PerEndDate Amt
A 8/1/2007 350
A 9/1/2007 250
B 8/1/2007 375
B 9/1/2007 300

I'm using:


SELECT PayPeriodNo, EMPLOYEE AS PayEmpNo, MIN(PerEndDate) AS PerEndDate, SUM(AMT) AS Amt
FROM dbo._vPayroll
GROUP BY PayPeriodNo, EMPLOYEE
ORDER BY PayPeriodNo, PayEmpNo

And the quantity is showind grand totals for each instance

Employee PerEndDate Amt
A 8/1/2007 600
A 9/1/2007 600
B 8/1/2007 675
B 9/1/2007 675

Can anyone help me with this?
Thanks
Leo