Hi Srini,
Starting SAP BI 4.x Life Cycle Manager is the part of Server install. There is no separate installer available for it.
It has been re-branded as Promotion Management and is available in CMC. If you are using BI 4.0 prior to SP04, you can access the same using http://servername:portno/BOE/LCM
Hope it helps.
Regards
Chinmaya