how to install SSO while integrating BI and Protal?

Hi all :

I am trying to follow link http://help.sap.com/saphelp_nw04/helpdata/en/62/831640b7b6dd5fe10000000a155106/frameset.htm

to do the while integrating BI and Protal.

in step 3 , it asks to make BI generate SSO tickets , I searched in the forum , but don't quite understand how to generate SSO tickets? sometimes generate certificate from portal beckend , sometimes BI side ,

what does it mean by

Installing SAPSECULIB on each application server of the BW system to use Single Sign-On (SSO)?

confused now . I just want to export bw web report to portal . Could you please give me hint ?

Thank you very much!!!

Edited by: jingying Sony on Jun 7, 2009 1:34 PM