Snow Leopard-VirtualBox-Windows 7 screen resolution

I purchased an Apple computer (a Macbook Pro 13") two months ago, and installed Windows 7 (run via VirtualBox) because I need to use one Windows-only software essential for my work. My problem is that I can't get the full 1280x800 resolution in Windows, as my current Windows settings offers only screen resolutions with a 4:3 aspect ratio (800x600 to 1600x1200).

Windows 7 recognizes my display as "Generic Non-Pnp monitor on Standard VGA graphics adapter". I downloaded the latest driver for Intel HD Graphics 3000, "Intel Graphics Media Accelerator Driver for Windows 7", but the installation was not successful, showing this message: "This computer does not meet the minimum requirements for installing the software".

Any advice on how can I get a 1280x800 screen resolution option? Or maybe, what exactly are the "minimum requirements" for installing the Windows 7 graphics driver for a Macbook Pro?

Host OS: Mac OS X (Snow Leopard) ver 10.6.8
VirtualBox version: 4.1.0
Windows version: Windows 7 Professional 64-bit SP1

Thanks in advance.

Wow, that was embarrassingly easy. Thanks a lot Kari.

I have a 17" macbook pro and I can only get a max 1600x1200 not the native 1920x1080.

I have downloaded the Guest Additions but that does not resolve my problem.

Any suggestions would be appreciated.

Have you considered using bootcamp? The drivers needed are within the bootcamp installation