Creating a login form in VB.NET

Hey!
I’m trying to build a application in VisualBasic, with a login form. I want the login to be connected to a specific website, so that when I open the app, insert my username and password, my app checks the info against the login server on the website, and opens the site in a browser after. So, mainly I want to be able to code my app so that I log in on the app, and the app opens the browser to the site i have chosen and automaticly logs in. Possible?