declare @command varchar(2000)
set @command = 'rename D:/XM_DTS/book1.xls book1.xls.'+convert(varchar(10),getdate(),20)+'-'+convert(varchar,DATEPART(ms,getdate()))
--exec master..xp_cmdshell 'del D:/XM_DTS/book1.xls.bak'
--print @command
exec master..xp_cmdshell @command