My Application is like this.<BR>If user clicks a link it starts a new window(another instance with news session)and i have to keep track of the same session in two windows. We are using multiple servers.<BR>A better example to understand my problem is..<BR>If we click "New email messages" link in MSN messenger it opens a new window. Similar to that.<BR>I will be greatful to all who can give me solution..<BR>Thanks