-Sql Server 2005 can convert database of 2000 and 7. You can do two ways. Method 1. 1. No need to detach the database. Just backup in sql 2000/7 and then restore in sql 2005. Method 2. 1. Detach the database. Move the mdf, ndf, log file to your desired location where sql server 2005 engine is running. 2. Open the sql server 2005 and attach the database. It will be ok. You can not use this mdf file to attach back again in sql 2000.