Can't install nvidia driver on VirtualBox guest win2k

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http://forums.fedoraforum.org – I have the nvidia 121.21 file for XP and Win2K. I have the driver running on this box on a dual boot win2k install. works fine. The same file on my guest win2k VirtualBox install says no driver available for my current hardware setup. My video card has the 8400 GS chip set. It is currently running 3D on This Fedora 12 install. Is the problem the VirtualBox will not allow the 3D driver to be installed. The installation had a comment about no 3D when it started. I also have not been able to get control of a USB port Device I need. There any way to have Virtual and 3D video drivers with a USB port? (HowTos)