In your tools there is a control called called webbrowser. Put this control on the tab you want the site to show. If it isn't there add it by right clicking on the toolbox and selecting "Choose Item". Under the .NET Frameworks Components scroll down and check the Webbrowser control.
I had this problem myself. You have to add:
if a tab doesnt come on startup or this if it does:
They were saying if you didnt use tabs.