The window it talks about is the one to the left which appears when you load Worldbuilder. Also to move you hold down the left mouse button and drag I think, to rotate you hold down the left mouse button I think and to zoom in and out use the scroll button. To reset you position click the scroll button and your view will go back to the defult. The reason I said "I think" is I forget every time I am not on worldbuilder but remember each time I go back on it.