Ubuntu resolution on Virtual Box(Mac OSX)

I'm running Ubuntu 9.1 inside VirtualBox 3.1.6 on Mac OS X 10.6.3. The screen resolution won't go beyond 800x600 and Ubuntu can't detect my monitor type.

How can I increase the resolution beyond 800x600? Are there any drivers I can install, for example?


Ubuntu won't be able to detect your monitor type because the Virtual Machine doesn't see your monitor, it sees a virtual monitor. If you have the Virtual Machine Additions installed then you should be able to change your resolutions or enter seamless mode for a more usable experience.