Installing Siteminder Agent on Weblogic

Hi,

Would someone give a light on how to install siteminder Agent on Weblogic(Backend App server) leaving the front end web server.?  Some more information below:

Goal: Is to authenticate the users to the portal which is deployed on weblogic application server through siteminder.

1. There is no front end webserver and only backend weblogic application server is there

2. Is it possible to achive the goal with only backend? If yes....how

3. We already deployed the siteminder application server agent (ASA) on the weblogic application server.

4. The client has a requirement that we need to use the existing login page only....

Your quick help would be appreciated.

Thanks,

Chakri