Hello Amarnath ,
when connecting Web Intelligence to SAP BW there is no need at all to create a Universe. When it comes to the data connectivity from Web Intelligence to SAP BW you can point Web Intelligence directly to a BEx query and use the elements from the BEx query in Web Intelligence.
Also keep in mind that Web Intelligence will always struggle when it comes to using hierarchies and you might want to take a look at SAP BUsinessObjects Analysis, edition for Microsoft office or Analysis, edition for OLAP
regards
Ingo Hilgefort