Hello! It is given: 1. macbook Pro (13,3-inch (1280 x 800)) 2. Mac OS 10.7.5 3. Parallels 7.0.15xxx installed mac os as guest os from a restoration disk, but guest MAC OS doesn't want to be started in screen bigger than 1024x768 = (How to start it in my screen: 1280x800? tnx! p.s. sorry for my bad english =)