web browser window

I am creating a small app that sits on the desktop at all time, all it contains is a web browser window. that runs just one website. My problem is I added the window using visual studio 2008 and all works well it loads my site and does all I want it to, but the web browser it includes runs like ie7 the site was designed for ie8 and doesn't render properly under ie7, it would be alot of work to update the site that will only ever be viewed in this app, so was wondering if there is anyway to have it run like ie8 or even firefox or chrome. This is my first ever c# app I usually work with php, so would be helpful if you broke any suggestions down to a way I can understand as I am not savvy with the more complex features of visual studio. Thanks in advance