
Resize webbrowser around applet?
Well, you could remove all content from the webpage except for the applet, or create a control that takes and downloads the applet and displays it (similarly to what RSbot does). What you could do is download the Scionbot source and get what you can out of that since C# resembles VB.net and VB.net uses the same type of syntax as VB6.
For this kind of project though, I'd suggest upgrading to a more versatile language.