>>>I don't want to use SQL 2005. Because I couldn't even where I can attach database to server like in enterprise manager.
>>
>>Hah?
>
>I can attach any database which I moved it from another PC with SQL Server Enterprise Manager at SQL 2000. I couldn't anything like that tool at SQL 2005...
>
>Thank you for that link!!! :)

In the Object Explorer right click on the Database and click tasks. I see Detach option there...