Need grouping login in SQL

See more:

SQL-Server-2005

SQL-Server

HELLO FRIENDS,
I WAS TRYING FOLLOWING QUERY

SELECT OrderID,V.ForcSummCalDesc,    
Isnull(Q1,0) Q1,    
Isnull(Q2,0) Q2 ,    
Isnull(Q3,0) Q3,    
Isnull(Q4,0) Q4, ISNULL(YTD ,0) YTD
FROM FWB_VWForcSummCalc v    
LEFT OUTER JOIN
(
	SELECT [ForcSummCalDesc], SUM(Q1) [Q1],SUM(Q2) [Q2],SUM(Q3) [Q3],SUM(Q4) [Q4] FROM
	(
		SELECT 
		CASE WHEN CONVERT(INT,MONTH(ClosedDate)) IN (7,8,9) THEN
		SUM(ORDERVALUE * dbo.FWB_ufn_GetConversionRate(GETOPP.Currency,@Currency,@ReviewMonth)) END Q1,
		CASE WHEN CONVERT(INT,MONTH(ClosedDate)) IN (10,11,12) THEN
		SUM(ORDERVALUE * dbo.FWB_ufn_GetConversionRate(GETOPP.Currency,@Currency,@ReviewMonth)) END Q2,
		CASE WHEN CONVERT(INT,MONTH(ClosedDate)) IN (1,2,3) THEN
		SUM(ORDERVALUE * dbo.FWB_ufn_GetConversionRate(GETOPP.Currency,@Currency,@ReviewMonth)) END Q3,
		CASE WHEN CONVERT(INT,MONTH(ClosedDate)) IN (4,5,6) THEN
		SUM(ORDERVALUE * dbo.FWB_ufn_GetConversionRate(GETOPP.Currency,@Currency,@ReviewMonth)) END Q4,
		CASE   
		WHEN ProbabilityPercent = 100 THEN '100% & Contracts'
		WHEN ProbabilityPercent = 90 THEN '90%'
		WHEN ProbabilityPercent IN (60,75) THEN '60% - 90%'
		ELSE 'Below 60%'
		END [ForcSummCalDesc]
		FROM FWB_Opportunities OPP
		INNER JOIN dbo.FWB_ufn_GetOpportunity(@empid) GETOPP ON OPP.OpportunityId = GETOPP.OpportunityId 
		AND GETOPP.REVIEWMONTH = @ReviewMonth
		WHERE OPP.ReviewMonth = @ReviewMonth AND (ClosedDate Between @startDate AND @endDate) 
		AND [Include] = 1 
		AND GETOPP.AccountID=ISNULL(@accountid,GETOPP.AccountID) 
		AND GETOPP.VCID=ISNULL(@vcid,GETOPP.VCID) 
		AND GETOPP.GeoID= ISNULL(@geoid,GETOPP.GeoID)  
		GROUP BY ProbabilityPercent,ClosedDate
	) A
	GROUP BY [ForcSummCalDesc]
)B
ON V.[ForcSummCalDesc] = B.ForcSummCalDesc

I ALSO WANT ANOTHER FEILD CALLED 'YTD' IN FINAL OUTPUT WHICH TAKES THE FOLLOWING FORM
YTD=Q1+Q2+Q3+Q4

ANY IDEA HOW I CAN DO THIS

I TRIED FOLLOWING

SELECT OrderID,V.ForcSummCalDesc,    
Isnull(Q1,0) Q1,    
Isnull(Q2,0) Q2 ,    
Isnull(Q3,0) Q3,    
Isnull(Q4,0) Q4 
FROM FWB_VWForcSummCalc v    
LEFT OUTER JOIN
(
    SELECT [ForcSummCalDesc],Q1,Q2,Q3,Q4,SUM(Q1+Q2+Q3+Q4) YTD FROM
    (
	SELECT [ForcSummCalDesc], SUM(Q1) [Q1],SUM(Q2) [Q2],SUM(Q3) [Q3],SUM(Q4) [Q4] FROM
	(
         ....
        )A
	GROUP BY [ForcSummCalDesc]
    )C GROUP BY [ForcSummCalDesc],Q1,Q2,Q3,Q4
)B
ON V.[ForcSummCalDesc] = B.ForcSummCalDesc

IT GIVES ME NULL VALUE IN YTD COLUMN

ANY IDEA, HOW CAN I DO THIS?

THANKS IN ADVANCE