Thanks for your reply DarioCrivelli
I had fixed the problem and its working fine.

www.lightstreamer.com/vb/showthread.php?p=3380#post3380

now i am working on actual requirement which we are looking for data fetching from DB. struck up with where i need to start developing the application. As per my knowledge 1st we should start with developing DataAdapter and then MetaData Adapter last web client. Further assistance will be added advantage for me if you could assist

Thanks