I installed 72.30 (it's a Longhorn Beta driver for the 440 GO) from http://www.driverheavendownloads.net/nvidia.htm on a Dell C840 (1gb) with the Geforce4 440 GO GPU (64mb)running Windows 7 RC (build 7100) and this driver works. I installed it using Windows XP compatibily/administrator mode. Note that the NWIZ program on reboot will display a publisher UAC warning (which I turned off) on reboot. I also changed NWIZ.exe to run in XP compatibility/administrator mode. After installation I did a resetup of Windows media center and I can now watch recorded TV on the C840. I hope this helps.
Message edited by rpwmjb on 06-10-2009 at 05:47:24 PM