Most xlnt, we're home free now. I told you wrong before when I spoke of those 3 bars. I use Chrome for this and was looking at the wrong browser while I was trying to help you. My bad.
The menu that drops down is what we want. Go to the Settings and when you click on it the page with the "on start up" choices shows up. That's where you tell the browser what to open. Click on "set pages" and another window will pop up-that's where you enter that
http://www.wgt.com/gameclient.aspx
Once you do that, that's where the browser will take you whenever you open it. Make sure you check the radio dot next to "open a specific...."