This may be a dumb question, and I'm sorry if it is, but is there a slide bar thingie at the bottom of the window? If there is and you can slide that bar to the right to see the rest of the window, all you need to do is click on the maximize button (the square, between the _ and the X) in the upper right corner of the window. An alternative to maximizing the window would be to grab the right hand border of the window (move the mouse cursor close to the edge and it will change into something else) and move it to the right, making the window larger.
If there isn't a slide bar thingie and you can't maximize the window, you're screwed! :) Just kidding, call your friendly tech support rep.