The SQLPlan is attached and here is the index:

USE [GLDemo]

GO

/****** Object: Index [BizTransIDX] Script Date: 11/12/2009 12:01:00 ******/

CREATE NONCLUSTERED INDEX [BizTransIDX] ON [dbo].[GL]

(

[Company_No] ASC,

[Year_For_Period] ASC,

[Period] ASC,

[Account_Number] ASC

)

INCLUDE ( [Journal_ID],

[Amount],

[Source],

[Description],

[Date_Created],

[Date_Last_Modified],

[Last_Maintained_By],

[Currency_ID],

[Foreign_Amount],

[Trans_No],

[Passcode],

[Transaction_Date],

[Units],

[Transaction_Number],

[StatusFlag]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]