Interestingly, the video drivers are for different NVidia models, and an Intel one. No ATI drivers there.
How about downloading the driver from AMD? http://support.amd.com/us/gpudownload/Pages/index.aspx
Ahh, I just picked Desktop Graphics, Radeon 7xxx Series, Radeon 7500 Series, and the available operating systems are Windows ME/98, Windows 2000 - Professional, Windows XP - 32 bit.
You have these options then:
- use the generic driver Windows 7 offers. Hopefully it will allow to use the proper screen resolutions.
- use Windows Update to see if it finds a more suitable driver
- try to install the Windows XP driver, run the installer in Windows XP SP3 compatible mode.
If nothing helps: Install Windows XP. At least up until now, it got the security patches, unfortunately this will change soon.