Open in new window method, please help

Hi all,

I'm working on a small project of vc++ 6.0 and need to allow few browser
controls to browse a secured site simultaneously. The problem is that when
more than one browser tries to login the other browser(s) 'looses'
authorization. I need the 'Open in new window' feature (hidden) in my app so
I'll be able to login in the first browser and then 'duplicate' my instance
to new browser window controls. I located the OnLinkOpenInNewWindow in the
firefox project and found that IWebBrowserImpl::Navigate with flag
navOpenInNewWindow should do the work, but I'm having problems understanding
why exactly it should work (what lines of code actually causing the new
browser control to 'remember' the instance/login info.). My experience with
COM is limited and second, I'm using MS CHtmlView or IWebBrowser for that
matter and I'm not sure that the code in the mentioned method will work as
with MS IWebBrowser (although large code seems pretty similar).
I wonder, can someone please help me ?
Regards,
  Yariv