在SQL Server数据库上更改dateformat而不是在整个服务器上更改为dd / mm / yyyy

can anyone help, we have a sql server 2005 database installed (actually its an sql server 2000 attached to an sql server 2005 server) with the default server language language USA with dateformat like mm/dd/yy and we really need to keep it this way but currently just uploaded a new database to the server and this needs to have the dateformat for dd/mm/yyyy.can anyone help, we have a sql server 2005 data