need help urgent

Question

hi i am using 2 IE controls in vb.net on a form i want to visit a site and login there with 2 different login. the problem i am facing, is that i login with one username , it login me. in the other browser control on the same form when i login with different user, it login me with the already logged-in user in the first browser control.wht to do of this problem. plz help.