Backup, Restore with new name.

>
>By duplicate (in the title) I mean: take one of my databases and add the same database to the SQL server under a different name. I am think of doing the following:
>1. Detach the "original" database
>2. Copy two database files to some different name
>3. Attach both databases
>Will this work? Or what is a better way of accomplishing my task? TIA.