WinForms web browser control loosing asp.ent session in popup window

Question

I'm using Web Browser Control in a windows form (vb.net) to display one of our website (ASP.NET) as a part of the windows application. Everything works fine, but when I've a popup window from the website page, I'm loosing the ASP.Net session. I've used extended version of web browser control to have *Navigate2* event to catch the popup window and open it in a windows form web browser control again, then it works, but I have problems with size of the popup and close button in the html popup window.

Please let me know if there is a work around for loosing session in Web browser control popup window in asp.net.

How can I open a popup window from my winforms web browser control without loosing the session?