i'm runnig virtual machine 4.1.12 on my ubuntu 12.04. The guest system is Windows Xp professional. Now my problem is that i cannot change the resolution it sticks to 800x600. I wish to get a 16:9 resolution. I already installed guest additions but this changes nothing. When my virtul machine is running there is no menu on the top. I had to install guest additions manually. I do not know what is worng where. Could you help me out please?