sticky opening page

I have a problem....naturally or I would not be posting here...lol.
Here it is .
I am not exactly sure what my internet providers' installation guy did....yet
I have a sticky opening page which is huge (much bigger than my normal res on the screen) , and I can't get it to close , or go away. It covers up the entire screen and I have to drag it down just to gain access to my desktop.
Are there any ideas out there? I need all the help I can get ...and would really Really love to see this page disappear.
thanks