i am using 8i and create a backup set with the following script without recovery catalog
run {allocate channel c1 type disk
format 'c:\backup\test_db_%U';
backup database include current controlfile;
copy current controlfile to 'c:\backup\control1.ctl';}


Now i have lost all of my control files and want to restore control file by using the following steps

1-C:\>rman nocatalog

2-RMAN> connect target sys/gateway@wizmen
RMAN-06193: connected to target database (not started)

3-RMAN> set dbid=3460708078
4-RMAN> startup nomount

5- RMAN> run{allocate channel c1 type disk;
restore controlfile;
sql 'alter database mount';}


And i got the error

RMAN-03022: compiling command: allocate
RMAN-03023: executing command: allocate
RMAN-08030: allocated channel: c1
RMAN-08500: channel c1: sid=10 devtype=DISK

RMAN-03022: compiling command: restore

RMAN-03022: compiling command: IRESTORE
RMAN-03026: error recovery releasing channel resources
RMAN-08031: released channel: c1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure during compilation of command
RMAN-03013: command type: restore
RMAN-03002: failure during compilation of command
RMAN-03013: command type: IRESTORE
RMAN-06003: ORACLE error from target database: ORA-01507: database not mounted
ORA-06512: at "SYS.X$DBMS_RCVMAN", line 4461
ORA-06512: at line 1
RMAN-06097: text of failing SQL statement: begin dbms_rcvman . setDatabase ( upp
er ( :dbname:dbname_i ) , :rlscn , :rltime , :fhdbi:fhdbi_i ) ; end ;
RMAN-06099: error occurred in source file: krmk.pc, line: 9196


I have tried all to recover the control files but unable to do so
can anybody help me in this regard?
thanx in advance