Command to open database with missing datafile

Hello Brian, can you please tell me the command(s) or procedure (if there is one) to open a database that has a missing datafile due to a media failure (external device)? The database is in noarchivelog mode, there's not any backup and the version is 10g Release 2. It doesn't matter if the data is lost or inaccesible, but I just want at least to open the database. Thanks in advance.

startup mount
alter database datafile '/directory/filename' offline drop;
alter database open;
drop tablespace ts_name including contents and datafiles;