Greetings everyone. I just bought a computer from dell with Vista installed. I wanted a Vista/Ubuntu dual boot so I resized the Vista partition with GParted and installed Ubuntu in the free space. However, something must have gone wrong because now Vista doesn't boot up. When I select Vista from the GRUB menu it says, "BOOTMGR is missing." Dell never sent me the Vista installation cd's so I can't reinstall Vista. What can I do?