Hello. I use VS 2005 and winform app. It is simple app with one button and webbrowser object. I open some link in this webbrowser and when i click on the button it should fill login and pass in form. The problems: 1) This page use <iframe src="http://someurl.com"> to show this login form, so i don't have the code on this page and can't found this control and use something like .SetAttribute("value", "mypassword"); 2) I can't use DOM model of this page because this <iframe> from other doman and browser don't give me access to it. 3) I don't know how to find handles of those text boxes and use WM_SETTEXT windows message :( I have handle of webbrowser, but not from elements inside of this object. So, i see the html form in my webbrowser but don't know how to fill it. Give me some idea please.