Oracle Database Discussions

Hi,
DB_VERSION=10.2.0.4
OS_VERSION=Windows 2008 R2

I have a listener.ora which listens to DB1 on 1521 port.

Following is the entry of the llistener.ora

# listener.ora Network Configuration File: D:\Oracle10g\network\admin\listener.ora
# Generated by Oracle configuration tools.

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = D:\Oracle10g)
      (PROGRAM = extproc)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.0.1)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
    )
  ) 

Now on the same server i.e. 10.1.0.1 we have moved a database DB2 which connects to application via 1528.

How can i configure my listener ?

I have already did following for DB1 and DB2

sql> alter system register;


Thanks in advance