Backup Error: sql-dom sql state 4200

When trying to backup a sql2000 database I receive the following error:
"Microsoft SQL-DOM (odbc sqlstate: 42000)
The Volume on device xxx e:\backupfilename.bak belongs to a different media set.
Backup or restore operation terminating abnormally."
Thanks for any help,
JimIf you have no use for the existing backup file, you could
either delete the file from the file system before doing
the backup or add the FORMAT option to the BACKUP
statement.
Linchi
>--Original Message--
>When trying to backup a sql2000 database I receive the
following error:
>"Microsoft SQL-DOM (odbc sqlstate: 42000)
>The Volume on device xxx e:\backupfilename.bak belongs to
a different media set.
>Backup or restore operation terminating abnormally."
>Thanks for any help,
>Jim
>
>.
>