Authentication when a new browser window is launched from WebBrowserControl.

Iam using the web browser control for a custom browser for accessing an apache server. The first time I log on to the server it asks for the user name and password, and it allows me to access the all the other pages without authentication.
But for certain operations, it launches a new browser window (an IE window), and at this point it again asks for authentication.
This dual authentication does not occur if I access the pages with IE.
Is it because the second time an IE window is launched instead of a Webrowser Control?
Is there any work around to solve this problem.

Can somebody help me out on this?

Thank you.

jp.