total newbie: how do i create a logon form?? HELP!

hi

i would like to know how i could supply 2 textboxes and 1 button to logon a user to a website like myspace.com
and it would use the input in the textboxes for the username and password, and once the button is clicked it would log them onto the myspace.com and myspace would appear in webbrowser1

i have the code for webbrowser1 to navigate to myspace.com after the clicking of the button

but how do i submit the username and pass in the 2 textboxes to myspace.com server to log them in

HELLLP

thanks