so im sitting thre minding my own business, surfing the web, all of the sudden,the image on my screen just goes out, and i just see a bunch of lines, verticle lines, in idfferent colors. i restarted, and same problem... i hooked it up to an external monitor and that works fine. .. but my screen on the ibook is just a bunch of verticle lines now.what make thing worse is im traveling in a week, and i need my ibook with me.... AHH>. waht do i do?!