OK one last problem

This is my last problem… if you go to my website http://www.landsofprii.net.ms and click on the image it should open a window that i specified to be a certain width and hieght. But ever since i switched to another host they put this banner or advertisment or whatever it is at the top of my site so thereforenow you cant see the whole thing. I need to know how to make the opened window focus on my website and not at the top of the webpage… please help.