Thanks for info. I tried what you instruct but i got an error.

TITLE: Microsoft SQL Server Management Studio

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Attach database failed for Server 'ANANDH-HP'. (Microsoft.SqlServer.Smo)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=10.50.1617.0+((KJ_RTM_GDR).110422-1901+)&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Attach+database+Server&LinkId=20476

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ADDITIONAL INFORMATION:

An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)

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Unable to open the physical file "D:\ssis_works\New folder\SQL2008.AdventureWorksLT2008_Only_Database\AdventureWorksLT2008_Data.mdf". Operating system error 5: "5(failed to retrieve text for this error. Reason: 15105)". (Microsoft SQL Server, Error: 5120)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=10.50.1617&EvtSrc=MSSQLServer&EvtID=5120&LinkId=20476

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BUTTONS:

OK

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Plz help me on this...