Query Optimization

How can I optimized the following query:
(SELECT e.SID
FROMStudents s
JOINTable1e ON e.SID= s.SID
JOINTable2 ed ON ed.Enrollment = e.Enrollment
JOINTable3 t ON t.TNum = e.TNum
JOINTable4 bt ON bt.TNum = t.TNum
JOINTable5 b ON b.Batch = bt.Batch
JOIN IPlans i ON i.IPlan = ed.IPlan
JOINPGroups g ON g.PGroup= i.PGroup

WHERE t.TStatus= 'ACP'
ANDed.EStatus= 'APR'
ANDe.SID=(select distinct SID from Table1 where Enrollment=@DpEnrollment))
AND(ed.EffectiveDate=
(SELECT EffectiveDate
FROM Table2 ed JOIN Table1 e
ON e.enrollment=ed.enrollment
WHERE IPlan = @DpIPlan
ANDTCoord = @DpTCoord
ANDAGCoord= @DpAGCoord
ANDDCoord=@DpDCoord )
ANDDSeq= @DpDSeq)
ANDe.SID=
(select distinct SID from Table1 where Enrollment=@DpEnrollment))
)
ANDed.TerminationDate=
(SELECT TerminationDate
FROM Table2 ed JOIN Table1 e
ON e.enrollment=ed.enrollment
WHERE IPlan = @DpIPlan
ANDTCoord = @DpTCoord
ANDAGCoord= @DpAGCoord
ANDDCoord= @DpDCoord )
ANDDSeq= @DpDSeq)
ANDe.SID=
(select distinct SID from Table1 where Enrollment=@DpEnrollment))
)
))