WPF with WatiN plug in. need to open up IE and go to google

Question

 I need to make a WPF application in visual studio 2012 for desktop. And I have to have a text box and button (which I have), That when you type in the text box and click the button the app will launch IE and go to google and search for whatever you typed into the text box and automatically select a link from the list of search results and go to that page. Any suggestions on how to do this? thank you!!!!!! I need answers ASAP.