How to clone database from backup without access to original DB

Question

I want to create a new database from existing backup files and rolling forward some of the archivelogs (preferably with a new name and with different directory layout).
How can I achieve the task on a separate test server (without access to the original database)? I found a lot of sources ( e.g. http://www.oracle-base.com/articles/11g/DuplicateDatabaseUsingRMAN_11gR2.php ) but all with connection to original DB (e.g. entries in tnsanmes.ora)
Backup runs a simple
BACKUP DATABASE PLUS ARCHIVELOG;
DB Version is 11.2.0.2 on Linux.

Answer 1

Many thanks to your help. Finally I was able to restore the DB. The steps I used (similiarly also mentioned in some of the links above).
1.) Copy backup (backupset, autobackup, archivelog) to the new server into directories
/export/restore/autobackup/2012_03_01
/export/restore/autobackup/2012_03_02
/export/restore/archivelog/2012_03_01
/export/restore/backupset/2012_03_01
2.) create pfile initDBREST.ora
DB_NAME=DBREST
3.) Mount DB
ORACLE_SID=DBREST; export ORACLE_SID
sqlplus / as sysdba
STARTUP NOMOUNT;
4.) Connect to auxiliary DB
ORACLE_SID=DBREST; export ORACLE_SID
rman AUXILIARY /
5.) Create directories for new DB for datafiles in e.g. /export/oradata/DBREST/
6.) Duplicate DB and reset parameter if necessary (e.g. memory_max as test server is lower on RAM)
DUPLICATE DATABASE TO DBREST
until time "to_date('02.03.2012 15:00:00','DD.MM.YYYY hh24:mi:ss')"
DB_FILE_NAME_CONVERT '/export/fs1/oradata/oldDB/','/export/oradata/DBREST/', '/export/fs2/oradata/oldDB/','/export/oradata/DBREST/'
SPFILE
SET MEMORY_TARGET '2G'
SET MEMORY_MAX_TARGET '2G'
SET db_recovery_file_dest '/export/oradata/'
SET db_recovery_file_dest_size '100G'
BACKUP LOCATION '/export/restore'
NOFILENAMECHECK;
7.) create temporary tablespace