I thought I would share some directions on detaching and reatching a database from the osql (SQL 7, 2000, MSDE) command line or the SQL 2005 the sqlcmd command line.

osql into the server: (i.e. – osql -u sa -p password)

Display all databases on the server:

sp_databases
go

Note:  If you do not know the location of the MDF and LDF files use the following to determine:

use <database_name>
go
sp_helpfile
go
use master
go
sp_detach_db 'existing_db_name'
go
sp_attach_db 'new_db_name', '<path to the database MDF file>', '<path to the database LDF file>'
go